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Liu J, Wang L, Zhang X, Wang S, Qin Q. Nervous necrosis virus induced vacuolization is a Rab5- and actin-dependent process. Virulence 2024; 15:2301244. [PMID: 38230744 PMCID: PMC10795790 DOI: 10.1080/21505594.2023.2301244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 12/28/2023] [Indexed: 01/18/2024] Open
Abstract
Cytoplasmic vacuolization is commonly induced by bacteria and viruses, reflecting the complex interactions between pathogens and the host. However, their characteristics and formation remain unclear. Nervous necrosis virus (NNV) infects more than 100 global fish species, causing enormous economic losses. Vacuolization is a hallmark of NNV infection in host cells, but remains a mystery. In this study, we developed a simple aptamer labelling technique to identify red-spotted grouper NNV (RGNNV) particles in fixed and live cells to explore RGNNV-induced vacuolization. We observed that RGNNV-induced vacuolization was positively associated with the infection time and virus uptake. During infection, most RGNNV particles, as well as viral genes, colocalized with vacuoles, but not giant vacuoles > 3 μm in diameter. Although the capsid protein (CP) is the only structural protein of RGNNV, its overexpression did not induce vacuolization, suggesting that vacuole formation probably requires virus entry and replication. Given that small Rab proteins and the cytoskeleton are key factors in regulating cellular vesicles, we further investigated their roles in RGNNV-induced vacuolization. Using live cell imaging, Rab5, a marker of early endosomes, was continuously located in vacuoles bearing RGNNV during giant vacuole formation. Rab5 is required for vacuole formation and interacts with CP according to siRNA interference and Co-IP analysis. Furthermore, actin formed distinct rings around small vacuoles, while vacuoles were located near microtubules. Actin, but not microtubules, plays an important role in vacuole formation using chemical inhibitors. These results provide valuable insights into the pathogenesis and control of RGNNV infections.
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Affiliation(s)
- Jiaxin Liu
- Biosafety Laboratory, Guangdong Second Provincial General Hospital, Guangzhou, China
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Liqun Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Xinyue Zhang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Shaowen Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Qiwei Qin
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Richardson C, Cromer M, Tatem L, Wade R, Russell D. Polymicrobial Purulent Pericarditis From a Pancreatico-Pericardial Fistula. JACC Case Rep 2024; 29:102288. [PMID: 38465285 PMCID: PMC10918555 DOI: 10.1016/j.jaccas.2024.102288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/05/2024] [Accepted: 02/15/2024] [Indexed: 03/12/2024]
Abstract
A 54-year-old male with chronic pancreatitis presented with dyspnea. Computed tomography scans demonstrated a subdiaphragmatic fluid collection with pericardial fistulization. Pericardial fluid cultures were polymicrobial in nature. Purulent pericarditis is rare but carries a high mortality rate. We present the first documented case of pancreatico-pericardial fistulization causing purulent pericarditis.
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Affiliation(s)
- Christopher Richardson
- Division of Pulmonary, Allergy, & Critical Care Medicine, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Mark Cromer
- Division of Internal Medicine, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Luis Tatem
- Division of Pulmonary, Allergy, & Critical Care Medicine, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Raymond Wade
- Division of Pulmonary, Allergy, & Critical Care Medicine, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Derek Russell
- Division of Pulmonary, Allergy, & Critical Care Medicine, School of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
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Roshardt Prieto NM, Turko P, Zellweger C, Nguyen-Kim TDL, Staeger R, Bellini E, Levesque MP, Dummer R, Ramelyte E. Patterns of radiological response to tebentafusp in patients with metastatic uveal melanoma. Melanoma Res 2024; 34:166-174. [PMID: 38126339 PMCID: PMC10906186 DOI: 10.1097/cmr.0000000000000952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023]
Abstract
Metastatic uveal melanoma (mUM) is a rare type of melanoma with poor outcomes. The first systemic treatment to significantly prolong overall survival (OS) in patients with mUM was tebentafusp, a bispecific protein that can redirect T-cells to gp-100 positive cells. However, the objective response rate according to Response Evaluation Criteria in Solid Tumors (RECIST) may underestimate the clinical impact of tebentafusp. As metabolic response assessed by PET Response Criteria in Solid Tumors (PERCIST) has been reported to better correlate with clinical outcome, we here compared the patterns of radiological and morphological responses in HLA-A*02:01-positive patients with mUM treated with tebentafusp. In the 19 enrolled patients, RECIST showed an overall response rate (ORR) of 10%, median progression-free survival of 2.8 months (95% CI 2.5-8.4), and median OS (mOS) of 18.8 months. In 10 patients, where both RECIST and PERCIST evaluation was available, the ORR was 10% for both; however, the PFS was longer for PERCIST compared to RECIST, 3.1 and 2.4 months, respectively. A poor agreement between the criteria was observed at all assessments (Cohen's kappa ≤0), yet they differed significantly only at the first on-treatment imaging ( P = 0.037). Elevated baseline LDH and age were associated with an increased risk for RECIST progression, while lymphocyte decrease after the first infusions correlated to reduced risk of RECIST progression. Detectable ctDNA at baseline did not correlate with progression. Early response to tebentafusp may be incompletely captured by conventional imaging, leading to a need to consider both tumor morphology and metabolism.
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Affiliation(s)
| | - Patrick Turko
- Department of Dermatology, University Hospital Zurich
- Medical Faculty, University of Zurich
| | - Caroline Zellweger
- Institute for Diagnostic and Interventional Radiology, University Hospital Zurich
| | - Thi Dan Linh Nguyen-Kim
- Institute for Diagnostic and Interventional Radiology, University Hospital Zurich
- Institute for Radiology and Nuclear Medicine Waid Municipal Hospital, Zurich, Switzerland
| | - Ramon Staeger
- Department of Dermatology, University Hospital Zurich
- Medical Faculty, University of Zurich
| | | | - Mitchell P. Levesque
- Department of Dermatology, University Hospital Zurich
- Medical Faculty, University of Zurich
| | - Reinhard Dummer
- Department of Dermatology, University Hospital Zurich
- Medical Faculty, University of Zurich
| | - Egle Ramelyte
- Department of Dermatology, University Hospital Zurich
- Medical Faculty, University of Zurich
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Borgers T, Enneking V, Klug M, Garbe J, Meinert H, Wulle M, König P, Zwiky E, Herrmann R, Selle J, Dohm K, Kraus A, Grotegerd D, Repple J, Opel N, Leehr EJ, Gruber M, Goltermann J, Meinert S, Bauer J, Heindel W, Kavakbasi E, Baune BT, Dannlowski U, Redlich R. Long-term effects of electroconvulsive therapy on brain structure in major depression. Psychol Med 2024; 54:940-950. [PMID: 37681274 DOI: 10.1017/s0033291723002647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
BACKGROUND Magnetic resonance imaging (MRI) studies on major depressive disorder (MDD) have predominantly found short-term electroconvulsive therapy (ECT)-related gray matter volume (GMV) increases, but research on the long-term stability of such changes is missing. Our aim was to investigate long-term GMV changes over a 2-year period after ECT administration and their associations with clinical outcome. METHODS In this nonrandomized longitudinal study, patients with MDD undergoing ECT (n = 17) are assessed three times by structural MRI: Before ECT (t0), after ECT (t1) and 2 years later (t2). A healthy (n = 21) and MDD non-ECT (n = 33) control group are also measured three times within an equivalent time interval. A 3(group) × 3(time) ANOVA on whole-brain level and correlation analyses with clinical outcome variables is performed. RESULTS Analyses yield a significant group × time interaction (pFWE < 0.001) resulting from significant volume increases from t0 to t1 and decreases from t1 to t2 in the ECT group, e.g., in limbic areas. There are no effects of time in both control groups. Volume increases from t0 to t1 correlate with immediate and delayed symptom increase, while volume decreases from t1 to t2 correlate with long-term depressive outcome (all p ⩽ 0.049). CONCLUSIONS Volume increases induced by ECT appear to be a transient phenomenon as volume strongly decreased 2 years after ECT. Short-term volume increases are associated with less symptom improvement suggesting that the antidepressant effect of ECT is not due to volume changes. Larger volume decreases are associated with poorer long-term outcome highlighting the interplay between disease progression and structural changes.
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Affiliation(s)
- Tiana Borgers
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Verena Enneking
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Melissa Klug
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Jasper Garbe
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Hannah Meinert
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Marius Wulle
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Philine König
- Department of Psychology, University of Halle, Emil-Abderhalden-Straße 26, 06108 Halle, Germany
| | - Esther Zwiky
- Department of Psychology, University of Halle, Emil-Abderhalden-Straße 26, 06108 Halle, Germany
| | - Rebekka Herrmann
- Department of Psychology, University of Halle, Emil-Abderhalden-Straße 26, 06108 Halle, Germany
| | - Janine Selle
- Department of Psychology, University of Halle, Emil-Abderhalden-Straße 26, 06108 Halle, Germany
- Deutsches Zentrum für Psychische Gesundheit, German Center of Mental Health, Site Halle, MLU Halle, Halle, Germany
| | - Katharina Dohm
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Anna Kraus
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Dominik Grotegerd
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Jonathan Repple
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Heinrich-Hoffmann-Strasse 10, 60528 Frankfurt am Main, Germany
| | - Nils Opel
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
- Department of Psychiatry and Psychotherapy, University Hospital Jena, Philosophenweg 3, 07743 Jena, Germany
| | - Elisabeth J Leehr
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Marius Gruber
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Janik Goltermann
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Susanne Meinert
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
- Institute for Translational Neuroscience, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Jochen Bauer
- Department of Clinical Radiology, University of Münster, Albert-Schweitzer-Campus 1, Building A16, 48149 Münster, Germany
| | - Walter Heindel
- Department of Clinical Radiology, University of Münster, Albert-Schweitzer-Campus 1, Building A16, 48149 Münster, Germany
| | - Erhan Kavakbasi
- Department of Psychiatry, University Hospital Münster, University of Münster, Albert-Schweitzer-Campus 1, Building A9, 48149 Münster, Germany
| | - Bernhard T Baune
- Department of Psychiatry, University Hospital Münster, University of Münster, Albert-Schweitzer-Campus 1, Building A9, 48149 Münster, Germany
- Department of Psychiatry, University of Melbourne, Victoria, Australia
- The Florey Institute of Neuroscience and Mental Health, Melbourne, Australia
| | - Udo Dannlowski
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
| | - Ronny Redlich
- Institute for Translational Psychiatry, University of Münster, Albert-Schweitzer-Campus 1, Building A9a, 48149 Münster, Germany
- Department of Psychology, University of Halle, Emil-Abderhalden-Straße 26, 06108 Halle, Germany
- Deutsches Zentrum für Psychische Gesundheit, German Center of Mental Health, Site Halle, MLU Halle, Halle, Germany
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5
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Townsend KM, Prescher JA. Recent advances in bioluminescent probes for neurobiology. Neurophotonics 2024; 11:024204. [PMID: 38390217 PMCID: PMC10883388 DOI: 10.1117/1.nph.11.2.024204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024]
Abstract
Bioluminescence is a popular modality for imaging in living organisms. The platform relies on enzymatically (luciferase) generated light via the oxidation of small molecule luciferins. Since no external light is needed for photon production, there are no concerns with background autofluorescence or photobleaching over time-features that have historically limited other optical readouts. Bioluminescence is thus routinely used for longitudinal tracking across whole animals. Applications in the brain, though, have been more challenging due to a lack of sufficiently bioavailable, bright, and easily multiplexed probes. Recent years have seen the development of designer luciferase and luciferin pairs that address these issues, providing more sensitive and real-time readouts of biochemical features relevant to neurobiology. This review highlights many of the advances in bioluminescent probe design, with a focus on the small molecule light emitter, the luciferin. Specific efforts to improve luciferin pharmacokinetics and tissue-penetrant emission are covered, in addition to applications that such probes have enabled. The continued development of improved bioluminescent probes will aid in illuminating critical neurochemical processes in the brain.
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Affiliation(s)
- Katherine M Townsend
- University of California, Irvine, Department of Chemistry, Irvine, California, United States
| | - Jennifer A Prescher
- University of California, Irvine, Department of Chemistry, Irvine, California, United States
- University of California, Irvine, Department of Molecular Biology and Biochemistry, Irvine, California, United States
- University of California, Irvine, Department of Pharmaceutical Sciences, Irvine, California, United States
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Rajagopal S, Yao X, Abadir W, Baetz TD, Easson AM, Knight G, McWhirter E, Nessim C, Rosen CF, Sun A, Wright FC, Petrella TM. An Ontario Health (Cancer Care Ontario) Clinical Practice Guideline: Surveillance Strategies in Patients with Stage I, II, III or Resectable IV Melanoma Who Were Treated with Curative Intent. Clin Oncol (R Coll Radiol) 2024; 36:243-253. [PMID: 38336503 DOI: 10.1016/j.clon.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/20/2023] [Accepted: 01/15/2024] [Indexed: 02/12/2024]
Abstract
AIMS To make recommendations on managing the surveillance of patients with stage I, II, III or resectable IV melanoma who are clinically free of disease following treatment with curative intent. MATERIALS AND METHODS This guideline was developed by Ontario Health's (Cancer Care Ontario's) Program in Evidence-Based Care and the Melanoma Disease Site Group (including seven medical oncologists, four surgical oncologists, three dermatologists, one radiation oncologist and one patient representative). The MEDLINE, EMBASE, Cochrane Library, PROSPERO databases and the main relevant guideline websites were searched. Internal and external reviews were conducted, with final approval by the Program in Evidence-Based Care and the Melanoma Disease Site Group. The Grading of Recommendations, Assessment, Development and Evaluation approach was followed, and the Modified Delphi method was used. RESULTS Based on the current evidence (eight eligible original study papers and four relevant guidelines) and the clinical opinions of the authors of this guideline, the initial recommendations were made. To reach 75% agreement for each recommendation, the Melanoma Disease Site Group (16 members) voted twice and one recommendation was voted on three times. After a comprehensive internal and external review process (including national and international reviewers), 12 recommendations, three weak recommendations and six qualified statements were ultimately made. CONCLUSIONS After a systematic review, a comprehensive internal and external review process and a consensus process, the current guideline has been created. The guideline authors believe that this guideline will help clinicians, patients and policymakers make well-informed healthcare decisions that will guide them in clinical melanoma surveillance and ultimately assist in improving patient outcomes.
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Affiliation(s)
- S Rajagopal
- Trillium Health Partners, Credit Valley Hospital, Peel Regional Cancer Centre, Mississauga, Ontario, Canada.
| | - X Yao
- Department of Oncology, Department of Health Research Methods Evidence and Impact, McMaster University, Hamilton, Ontario, Canada; Program in Evidence-Based Care, Ontario Health (Cancer Care Ontario), Hamilton, Ontario, Canada.
| | - W Abadir
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Ontario, Canada
| | - T D Baetz
- Cancer Centre of Southeastern Ontario, Queen's Cancer Research Institute, Kingston, Ontario, Canada
| | - A M Easson
- Department of Surgery, Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - G Knight
- Department of Oncology, Grand River Regional Cancer Centre, Grand River Hospital, Kitchener, Ontario, Canada
| | - E McWhirter
- Department of Medical Oncology, Juravinski Cancer Centre, Hamilton Health Sciences, Hamilton, Ontario, Canada
| | - C Nessim
- Department of Surgery, University of Ottawa, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - C F Rosen
- Division of Dermatology, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - A Sun
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - F C Wright
- Department of Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - T M Petrella
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
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Rais A, Sharma S, Mishra P, Khan LA, Prasad T. Biocompatible carbon quantum dots as versatile imaging nanotrackers of fungal pathogen - Candida albicans. Nanomedicine (Lond) 2024; 19:671-688. [PMID: 38426561 DOI: 10.2217/nnm-2023-0292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
Aim: The development of carbon quantum dots (C-QDs) as nanotrackers to understand drug-pathogen interactions, virulence and multidrug resistance. Methods: Microwave synthesis of C-QDs was performed using citric acid and polyethylene glycol. Further, in vitro toxicity was evaluated and imaging applications were demonstrated in Candida albicans isolates. Results: Well-dispersed, ultra small C-QDs exhibited no cyto/microbial/reactive oxygen species-mediated toxicity and internalized effectively in Candida yeast and hyphal cells. C-QDs were employed for confocal imaging of drug-sensitive and -resistant cells, and a study of the yeast-to-hyphal transition using atomic force microscopy in Candida was conducted for the first time. Conclusion: These biocompatible C-QDs have promising potential as next-generation nanotrackers for in vitro and in vivo targeted cellular and live imaging, after functionalization with biomolecules and drugs.
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Affiliation(s)
- Anam Rais
- Special Centre for Nano Science & AIRF, Jawaharlal Nehru University, New Delhi, 110067, India
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Shubham Sharma
- Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Prashant Mishra
- Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Luqman Ahmad Khan
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Tulika Prasad
- Special Centre for Nano Science & AIRF, Jawaharlal Nehru University, New Delhi, 110067, India
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Castro R, Adair JH, Mastro AM, Neuberger T, Matters GL. VCAM-1-targeted nanoparticles to diagnose, monitor and treat atherosclerosis. Nanomedicine (Lond) 2024; 19:723-735. [PMID: 38420919 DOI: 10.2217/nnm-2023-0282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
Vascular cell adhesion molecule-1 (VCAM-1) was identified over 2 decades ago as an endothelial adhesion receptor involved in leukocyte recruitment and cell-based immune responses. In atherosclerosis, a chronic inflammatory disease of the blood vessels that is the leading cause of death in the USA, endothelial VCAM-1 is robustly expressed beginning in the early stages of the disease. The interactions of circulating immune cells with VCAM-1 on the activated endothelial cell surface promote the uptake of monocytes and the progression of atherosclerotic lesions in susceptible vessels. Herein, we review the role of VCAM-1 in atherosclerosis and the use of VCAM-1 binding peptides, antibodies and aptamers as targeting agents for nanoplatforms for early detection and treatment of atherosclerotic disease.
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Affiliation(s)
- Rita Castro
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Pharmaceutical Sciences & Medicines, Faculty of Pharmacy, Universidade de Lisboa, 1649-003, Lisboa, Portugal
| | - James H Adair
- Department of Materials Science, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Pharmacology, The Pennsylvania State University, University Park, PA 16802, USA
| | | | - Thomas Neuberger
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Gail L Matters
- Department of Biochemistry & Molecular Biology, Penn State College of Medicine, Hershey, PA 17033, USA
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Sleeswijk Visser TSO, Brul SL, O'Neill S, van Es EM, Eygendaal D, de Vos RJ. Measuring Ultrasonographic Thickness of the Achilles Tendon Insertion Is Less Reliable Than the Midportion in Healthy Tendons and Patients With Tendinopathy. J Ultrasound Med 2024; 43:713-722. [PMID: 38140763 DOI: 10.1002/jum.16396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023]
Abstract
INTRODUCTION Ultrasound is the preferred imaging method in the diagnostic process of Achilles tendinopathy (AT). Ultrasound tissue characterization (UTC) is a frequently used, standardized and valid method to assess tendon geometry in AT patients. It is unknown whether UTC is reliable for measuring Achilles tendon thickness. The aim of the study was to assess intra- and inter-rater reliability of Achilles tendon thickness measurements using UTC in both asymptomatic individuals and patients with AT, and to evaluate if the reliability of thickness measurements differs between the midportion and insertional area. METHODS Exactly 50 patients with AT and 50 asymptomatic individuals were included. Using the conventional US and standardized UTC procedure maximum thickness was measured in the midportion and insertion region. To determine inter- and intra-rater reliabilities, the intraclass correlation coefficient (ICC) was used. RESULTS The ICC values for inter- and intra-rater reliability were classified as "excellent," for the AT group (0.93 [95% CI: 0.88-0.96] and 0.95 [0.92-0.97]) and asymptomatic participants (0.91 [0.87-0.94] and 0.94 [0.92-0.96]). The reliability of measuring tendon thickness in the midportion region was "excellent," with both inter-rater (0.97 [0.95-0.98]) and intra-rater (0.98 [0.96-0.99]) ICC values indicating high levels of agreement. In the insertional region, ICC values for inter-rater (0.79 [0.69-0.87]) and intra-rater (0.89 [0.84-0.93]) reliability were "moderate to good." CONCLUSION We showed excellent reliability for measuring the US thickness of the midportion and good reliability of measuring the insertional region in patients with AT. Significantly lower ICCs were observed for the reliability of thickness measurements in the insertional region when compared with the midportion.
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Affiliation(s)
- Tjerk S O Sleeswijk Visser
- Department of Orthopedics and Sports Medicine, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Stefano L Brul
- Department of Orthopedics and Sports Medicine, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Seth O'Neill
- Department of Life Sciences, School of Allied Health, University of Leicester, Leicester, UK
| | - Eline M van Es
- Department of Orthopedics and Sports Medicine, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Denise Eygendaal
- Department of Orthopedics and Sports Medicine, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Robert-Jan de Vos
- Department of Orthopedics and Sports Medicine, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
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Marvisi C, Bolek EC, Ahlman MA, Alessi H, Redmond C, Muratore F, Galli E, Ricordi C, Kaymaz-Tahra S, Ozguven S, Alibaz-Oner F, Direskeneli H, Salvarani C, Quinn KA, Grayson PC. Development of the Takayasu Arteritis Integrated Disease Activity Index. Arthritis Care Res (Hoboken) 2024; 76:531-540. [PMID: 38059340 PMCID: PMC10963148 DOI: 10.1002/acr.25275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 11/11/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023]
Abstract
OBJECTIVE Accurate clinical assessment of disease activity in Takayasu arteritis (TAK) can be challenging. 18F-fluorodeoxyglucose-positron emission tomography (FDG-PET) can directly measure vascular inflammation. This study details the development of a new type of disease activity index called the Takayasu's Arteritis Integrated Disease Activity Index (TAIDAI). METHODS Clinical symptoms for TAIDAI were identified from a literature review. Each symptom was paired with FDG-PET findings in corresponding arterial territories. Constitutional symptoms were paired with acute phase reactant levels. One point was given for each clinical symptom paired with supporting FDG-PET or laboratory abnormalities and summed into the TAIDAI score. A TAIDAI of ≥1 defined active disease. To assess performance of TAIDAI, face validity, content validity, and sensitivity to change were evaluated within a prospective observational cohort study of patients with TAK. RESULTS Seventeen clinical symptoms were paired with imaging or laboratory abnormalities. In a cohort of 96 patients contributing 204 study visits, TAIDAI showed excellent sensitivity (96.3%) and good specificity (79.2%) compared to physician's clinical assessment. TAIDAI significantly correlated with physician global assessment, PET Vascular Activity Score, patient global assessment, and acute phase reactant levels. In patients treated with either tumor necrosis factor inhibitors or tocilizumab, a TAIDAI of 0 was achieved in 21 (91%) of 23 patients who met a predefined definition of clinical response. CONCLUSION TAIDAI is new type of disease activity index in TAK in which clinical symptoms are integrated with specific laboratory and imaging findings. TAIDAI should be validated in future randomized controlled trials in TAK.
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Affiliation(s)
- Chiara Marvisi
- Azienda USL-IRCCS di Reggio Emilia, Italy, and University of Modena and Reggio Emilia, Modena, Italy
| | | | | | - Hugh Alessi
- Systemic Autoimmunity Branch, National Institutes of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland
| | - Christopher Redmond
- Systemic Autoimmunity Branch, National Institutes of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland
| | - Francesco Muratore
- Azienda USL-IRCCS di Reggio Emilia, Italy, and University of Modena and Reggio Emilia, Modena, Italy
| | - Elena Galli
- Azienda USL-IRCCS di Reggio Emilia, Italy, and University of Modena and Reggio Emilia, Modena, Italy
| | | | | | - Salih Ozguven
- Marmara University School of Medicine, Istanbul, Turkey
| | | | | | - Carlo Salvarani
- Azienda USL-IRCCS di Reggio Emilia, Italy, and University of Modena and Reggio Emilia, Modena, Italy
| | - Kaitlin A Quinn
- Systemic Autoimmunity Branch, National Institutes of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland
| | - Peter C Grayson
- Systemic Autoimmunity Branch, National Institutes of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland
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11
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Deng J, Sun C, Zheng Y, Gao J, Cui X, Wang Y, Zhang L, Tang P. In vivo imaging of the neuronal response to spinal cord injury: a narrative review. Neural Regen Res 2024; 19:811-817. [PMID: 37843216 PMCID: PMC10664102 DOI: 10.4103/1673-5374.382225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 05/15/2023] [Accepted: 07/07/2023] [Indexed: 10/17/2023] Open
Abstract
Deciphering the neuronal response to injury in the spinal cord is essential for exploring treatment strategies for spinal cord injury (SCI). However, this subject has been neglected in part because appropriate tools are lacking. Emerging in vivo imaging and labeling methods offer great potential for observing dynamic neural processes in the central nervous system in conditions of health and disease. This review first discusses in vivo imaging of the mouse spinal cord with a focus on the latest imaging techniques, and then analyzes the dynamic biological response of spinal cord sensory and motor neurons to SCI. We then summarize and compare the techniques behind these studies and clarify the advantages of in vivo imaging compared with traditional neuroscience examinations. Finally, we identify the challenges and possible solutions for spinal cord neuron imaging.
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Affiliation(s)
- Junhao Deng
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Chang Sun
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
- Department of Orthopedics, Air Force Medical Center, PLA, Beijing, China
| | - Ying Zheng
- Medical School of Chinese PLA, Beijing, China
| | - Jianpeng Gao
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Xiang Cui
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Yu Wang
- Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, Beijing, China
| | - Licheng Zhang
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Peifu Tang
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
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12
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Otero MF, Tahoces PG, Mera A, Dalstra M, Verna C, Pedersen TK, Herlin T, Mira J. Quantification of temporomandibular joint space in patients with juvenile idiopathic arthritis assessed by cone beam computerized tomography. Orthod Craniofac Res 2024; 27:203-210. [PMID: 37525623 DOI: 10.1111/ocr.12702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Abstract
OBJECTIVE To describe a method to calculate the total intra-articular volume (inter-osseous space) of the temporomandibular joint (TMJ) determined by cone-beam computed tomography (CBCT). This could be used as a marker of tissue proliferation and different degrees of soft tissue hyperplasia in juvenile idiopathic arthritis (JIA) patients. MATERIALS AND METHODS Axial single-slice CBCT images of cross-sections of the TMJs of 11 JIA patients and 11 controls were employed. From the top of the glenoid fossa, in the caudal direction, an average of 26 slices were defined in each joint (N = 44). The interosseous space was manually delimited from each slice by using dedicated software that includes a graphic interface. TMJ volumes were calculated by adding the areas measured in each slice. Two volumes were defined: Ve-i and Vi , where Ve-i is the inter-osseous space, volume defined by the borders of the fossa and Vi is the internal volume defined by the condyle. An intra-articular volume filling index (IF) was defined as Ve-i /Vi , which represents the filling of the space. RESULTS The measured space of the intra-articular volume, corresponding to the intra-articular soft tissue and synovial fluid, was more than twice as large in the JIA group as in the control group. CONCLUSION The presented method, based on CBCT, is feasible for assessing inter-osseus joint volume of the TMJ and delimits a threshold of intra-articular changes related to intra-articular soft tissue proliferation, based on differences in volumes. Intra-articular soft tissue is found to be enlarged in JIA patients.
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Affiliation(s)
- María Florinda Otero
- Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Pablo G Tahoces
- Departamento de Electrónica e Computación, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Antonio Mera
- Rheumatology Service, Hospital Clínico Universitario, Santiago de Compostela, Spain
| | - Michel Dalstra
- Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Carlalberta Verna
- Department of Orthodontics and Pediatric Dentistry, University Center for Dental Medicine, Basel, Switzerland
| | - Thomas Klit Pedersen
- Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
- Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Troels Herlin
- Department of Pediatrics, Aarhus University Hospital, Aarhus, Denmark
| | - Jorge Mira
- Departamento de Física Aplicada and Instituto de Materiais (iMATUS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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Zapien-Campos B, Ahmadi Ganjeh Z, Both S, Dendooven P. Measurement of the 12C(p,n) 12N reaction cross section below 150 MeV. Phys Med Biol 2024; 69:075025. [PMID: 38382103 DOI: 10.1088/1361-6560/ad2b97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/21/2024] [Indexed: 02/23/2024]
Abstract
Objective. Proton therapy currently faces challenges from clinical complications on organs-at-risk due to range uncertainties. To address this issue, positron emission tomography (PET) of the proton-induced11C and15O activity has been used to provide feedback on the proton range. However, this approach is not instantaneous due to the relatively long half-lives of these nuclides. An alternative nuclide,12N (half-life 11 ms), shows promise for real-timein vivoproton range verification. Development of12N imaging requires better knowledge of its production reaction cross section.Approach. The12C(p,n)12N reaction cross section was measured by detecting positron activity of graphite targets irradiated with 66.5, 120, and 150 MeV protons. A pulsed beam delivery with 0.7-2 × 108protons per pulse was used. The positron activity was measured during the beam-off periods using a dual-head Siemens Biograph mCT PET scanner. The12N production was determined from activity time histograms.Main results. The cross section was calculated for 11 energies, ranging from 23.5 to 147 MeV, using information on the experimental setup and beam delivery. Through a comprehensive uncertainty propagation analysis, a statistical uncertainty of 2.6%-5.8% and a systematic uncertainty of 3.3%-4.6% were achieved. Additionally, a comparison between measured and simulated scanner sensitivity showed a scaling factor of 1.25 (±3%). Despite this, there was an improvement in the precision of the cross section measurement compared to values reported by the only previous study.Significance. Short-lived12N imaging is promising for real-timein vivoverification of the proton range to reduce clinical complications in proton therapy. The verification procedure requires experimental knowledge of the12N production cross section for proton energies of clinical importance, to be incorporated in a Monte Carlo framework for12N imaging prediction. This study is the first to achieve a precise measurement of the12C(p,n)12N nuclear cross section for such proton energies.
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Affiliation(s)
- Brian Zapien-Campos
- Particle Therapy Research Center (PARTREC), Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Zahra Ahmadi Ganjeh
- Particle Therapy Research Center (PARTREC), Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefan Both
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Peter Dendooven
- Particle Therapy Research Center (PARTREC), Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Anık A, Gök M, Tuzcu G. Assessment of Thyroid Gland in Children with Point-of-Care Ultrasound (POCUS): Radiological Performance and Feasibility of Handheld Ultrasound in Clinical Practice. J Clin Res Pediatr Endocrinol 2024:0-0. [PMID: 38523345 DOI: 10.4274/jcrpe.galenos.2024.2023-8-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
Background Point-of-Care Ultrasound (POCUS) refers to the use of portable ultrasound machines to perform quick and focused ultrasound examinations at a patient's bedside or point-of-care. POCUS can be performed by all health workers with specific training to use POCUS. This study aimed to investigate the radiological performance and feasibility of POCUS using a handheld ultrasound (HHUSD) system in children from the perspective of the thyroid gland perspective. Material-Methods A pediatric endocrinologist performed thyroid imaging in children referred to our hospital with suspected thyroid disease using an HHUSD system. The same children underwent US imaging using the same device by the first radiologist, and a second radiologist performed thyroid US using an advanced high-range Ultrasound Device (AHUSD) (defined as the gold-standard method) within two hours. The data obtained by the three researchers were compared with each other. Results This study included 105 patients (68.6% girls [n=72)]; mean age 12.8±3.6 years]. When the thyroid volume was evaluated, a strong correlation was found between the measurements of the three researchers (AA vs. MG: r=0.963, AA vs. GT: r=0.969, MG vs. GT: r=0.963, p<0.001). According to the Bland-Altman analysis, for total thyroid volume, AA measured 0.43 cc (%95 CI: -0.89-0.03) smaller than MG, and 0.11 cc (%95 CI: -0.30-0.52) larger than GT, whereas MG measured 0.52 cc (%95 CI: 0.09-0.94) larger than GT. When evaluated for the presence of goiter and nodules, a near-perfect agreement was found between the results of the three researchers (AA vs GT; κ=0.863, MG vs GT; κ=0.887, p<0.001, and AA vs GT; κ=1.000, MG vs GT; κ=0.972, p<0.001, respectively). When evaluated in terms of the longest axis of nodules, a high correlation was found between the measurements of the three researchers (AA vs MG; r=0.993, AA vs GT; r=0.996, MG vs GT; r=0.996, p<0.001). When evaluated in terms of the final diagnosis, the evaluations of the three researchers showed excellent agreement with each other (AA vs GT; κ=0.893, MG vs GT; κ=0.863, p<0.001, Accuracy rate AA vs GT: 93.3%; MG vs GT: 91.4%). Conclusion A pediatric endocrinologist, equipped with sufficient training in thyroid US evaluation, incorporates the HHUSD as a routine tool for clinical examinations in outpatient settings, they can effectively assess normal thyroid tissue in pediatric patients. Moreover, the HHUSD system proves to be useful in detecting thyroid pathologies. However, it is crucial to note that for a more comprehensive evaluation of thyroid nodules, including detailed assessment and Thyroid Imaging Reporting and Data System "TIRADS" classification, patients should be referred to radiology departments equipped with AHUSD systems. These specialized devices, along with the expertise of radiologists, are essential for in-depth evaluations and accurate classification of thyroid nodules.
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Affiliation(s)
- Ahmet Anık
- Aydın Adnan Menderes University, Faculty of Medicine, Department of Pediatrics, Division of Pediatric Endocrinology, Aydın, Türkiye
| | - Mustafa Gök
- Aydın Adnan Menderes University, Faculty of Medicine, Department of Radiology, Aydın, Türkiye
- University of Sydney, Faculty of Medicine, Department of Health Sciences Sydney, NSW, Australia
| | - Göksel Tuzcu
- Aydın Adnan Menderes University, Faculty of Medicine, Department of Radiology, Aydın, Türkiye
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Stratigaki M, Armirotti A, Ottonello G, Manente S, Traviglia A. Fungal and bacterial species richness in biodeteriorated seventeenth century Venetian manuscripts. Sci Rep 2024; 14:7003. [PMID: 38523163 PMCID: PMC10961312 DOI: 10.1038/s41598-024-57228-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/15/2024] [Indexed: 03/26/2024] Open
Abstract
Historical paper documents are susceptible to complex degradation processes, including biodeterioration, which can progressively compromise their aesthetic and structural integrity. This study analyses seventeenth century handwritten historical letters stored at the Correr Museum Library in Venice, Italy, exhibiting pronounced signs of biodeterioration. The techniques used encompassed traditional colony isolation on agar plates and proteomics analyses, employing nanoscale liquid chromatography coupled with high-resolution mass spectrometry (nano-LC-MS). Fluorescence microscopy was used for the first time in the historical paper biodeterioration context to supplement the conventional stereoscopic, optical, and scanning electron microscopic imaging techniques. This method enables the visualisation of microorganisms beyond and beneath the paper's surface through their natural intrinsic autofluorescence in a non-invasive and non-destructive way. The results demonstrate a diverse, complex, and abundant microbiota composed of coexisting fungal and bacterial species (Ascomycota, Mucoromycota, Basidiomycota, Proteobacteria, and Actinobacteria), along with mite carcasses, insects, parasites, and possibly protists. Furthermore, this study reveals certain species that were not previously documented in the biodeterioration of historical paper, including human pathogens, such as Histoplasma capsulatum, Brucella, Candida albicans, and species of Aspergillus (A. flavus, A. fumigatus, A. oryzae, A. terreus, A. niger) known to cause infections or produce mycotoxins, posing substantial risk to both artefacts and humans.
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Affiliation(s)
- Maria Stratigaki
- Center for Cultural Heritage Technology (CCHT), Istituto Italiano di Tecnologia, Via Torino 155, 30172, Venice, Italy.
| | - Andrea Armirotti
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genoa, Italy
| | - Giuliana Ottonello
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genoa, Italy
| | - Sabrina Manente
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Arianna Traviglia
- Center for Cultural Heritage Technology (CCHT), Istituto Italiano di Tecnologia, Via Torino 155, 30172, Venice, Italy
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Spijkers-Shaw S, Devlin R, Shields NJ, Feng X, Peck T, Lenihan-Geels G, Davis C, Young SL, La Flamme AC, Zubkova OV. Synthesis and Detection of BODIPY-, Biotin-, and 19 F- Labeled Single-Entity Dendritic Heparan Sulfate Mimetics. Angew Chem Int Ed Engl 2024; 63:e202316791. [PMID: 38308859 DOI: 10.1002/anie.202316791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/05/2024]
Abstract
Heparin and heparan sulfate (HS) are naturally occurring mammalian glycosaminoglycans, and their synthetic and semi-synthetic mimetics have attracted significant interest as potential therapeutics. However, understanding the mechanism of action by which HS, heparin, and HS mimetics have a biological effect is difficult due to their highly charged nature, broad protein interactomes, and variable structures. To address this, a library of novel single-entity dendritic mimetics conjugated to BODIPY, Fluorine-19 (19 F), and biotin was synthesized for imaging and localization studies. The novel dendritic scaffold allowed for the conjugation of labeling moieties without reducing the number of sulfated capping groups, thereby better mimicking the multivalent nature of HS-protein interactions. The 19 F labeled mimetics were assessed in phantom studies and were detected at concentrations as low as 5 mM. Flow cytometric studies using a fluorescently labeled mimetic showed that the compound associated with immune cells from tumors more readily than splenic counterparts and was directed to endosomal-lysosomal compartments within immune cells and cancer cells. Furthermore, the fluorescently labeled mimetic entered the central nervous system and was detectable in brain-infiltrating immune cells 24 hours after treatment. Here, we report the enabling methodology for rapidly preparing various labeled HS mimetics and molecular probes with diverse potential therapeutic applications.
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Affiliation(s)
- Sam Spijkers-Shaw
- The Ferrier Research Institute, Victoria University of Wellington, Gracefield Research Centre, Lower Hutt, New Zealand
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, 02115, United States
| | - Rory Devlin
- The Ferrier Research Institute, Victoria University of Wellington, Gracefield Research Centre, Lower Hutt, New Zealand
| | - Nicholas J Shields
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, 2006, Australia
| | - Xiang Feng
- MR Solutions Ltd., Guildford, Surrey, GU3 1LR, UK
- Sydney Imaging, Core Research Facility, The University of Sydney, NSW, 2006, Australia
| | - Tessa Peck
- School of Biological Sciences, Victoria University of Wellington, Kelburn Parade, Wellington, 6140, New Zealand
| | - Georgia Lenihan-Geels
- School of Biological Sciences, Victoria University of Wellington, Kelburn Parade, Wellington, 6140, New Zealand
| | - Connor Davis
- School of Biological Sciences, Victoria University of Wellington, Kelburn Parade, Wellington, 6140, New Zealand
| | - Sarah L Young
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, 2006, Australia
- Faculty of Science, University of Canterbury, Christchurch, New Zealand
| | - Anne C La Flamme
- School of Biological Sciences, Victoria University of Wellington, Kelburn Parade, Wellington, 6140, New Zealand
- Centre for Biodiscovery, Victoria University of Wellington, Kelburn Parade, Wellington, New Zealand
| | - Olga V Zubkova
- The Ferrier Research Institute, Victoria University of Wellington, Gracefield Research Centre, Lower Hutt, New Zealand
- Centre for Biodiscovery, Victoria University of Wellington, Kelburn Parade, Wellington, New Zealand
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17
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Ansaripour A, Moloney E, Branagan-Harris M, Patrone L, Javanbakht M. Digital variance angiography in patients undergoing lower limb arterial recanalization: cost-effectiveness analysis within the English healthcare setting. J Comp Eff Res 2024; 13:e230068. [PMID: 38517149 DOI: 10.57264/cer-2023-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024] Open
Abstract
Aim: Digital variance angiography (DVA) is a recently developed image processing method capable of improving image quality compared with the traditionally used digital subtraction angiography (DSA), among patients undergoing lower limb x-ray angiography. This study aims to explore the potential cost-effectiveness of DVA from an English National Health Service perspective. Materials & methods: A two-part economic model, consisting of a decision tree and a Markov model, was developed to consider the costs and health outcomes associated with the use of DVA as part of current practice imaging, compared with x-ray angiography using standard DSA. The model explored the impact of DVA on the development of acute kidney injury (AKI), chronic kidney disease and radiation-induced cancer over a lifetime horizon. Both deterministic and probabilistic analyses were performed to assess the cost per quality-adjusted life-year (QALY). Results: Base-case results indicate that DVA results in cost savings of £309 per patient, with QALYs also improving (+0.025) over a lifetime. As shown in sensitivity analysis, a key driver of model results is the relative risk (RR) reduction of contrast-associated acute kidney injury associated with use of DVA. The intervention also decreases the risk of carcinoma over a lifetime. Scenario analyses show that cost savings range from £310 to £553, with QALY gains ranging from 0.048 to 0.109 per patient. Conclusion: The use of DVA could result in a decrease in costs and an increase in QALYs over a lifetime, compared with existing imaging practice. The potential for this technology to offer an economically viable alternative to existing image processing methods, through a reduction in contrast media volume and radiation exposure, has been demonstrated.
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Affiliation(s)
- Amir Ansaripour
- Optimax Access Ltd, Hofplein, Rotterdam, 3032AC, The Netherlands
| | - Eoin Moloney
- Optimax Access Ltd, Kenneth Dibben House, Enterprise Rd, Chilworth, Southampton Science Park, Southampton, SO16 7NS, UK
| | - Michael Branagan-Harris
- Device Access Ltd, Market Access Consultancy, University of Southampton Science Park, Southampton, SO16 7NS, UK
| | - Lorenzo Patrone
- West London Vascular & Interventional Centre, London North West University Healthcare NHS Trust, Harrow, HA1 3UJ, UK
| | - Mehdi Javanbakht
- Optimax Access Ltd, Kenneth Dibben House, Enterprise Rd, Chilworth, Southampton Science Park, Southampton, SO16 7NS, UK
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Liu X, Cui Q, Li H, Wang S, Zhang Q, Huang W, Liu C, Cai W, Li T, Yang Z, Ma C, Ren L, Liu SF, Zhao K. Biocompatible Metal-Free Perovskite Membranes for Wearable X-ray Detectors. ACS Appl Mater Interfaces 2024. [PMID: 38513050 DOI: 10.1021/acsami.4c01069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Halide perovskites are emerging as promising materials for X-ray detection owing to their compatibility with flexible fabrication, cost-effective solution processing, and exceptional carrier transport behaviors. However, the challenge of removing lead from high-performing perovskites, crucial for wearable electronics, while retaining their superior performance, persists. Here, we present for the first time a highly sensitive and robust flexible X-ray detector utilizing a biocompatible, metal-free perovskite, MDABCO-NH4I3 (MDABCO = methyl-N'-diazabicyclo[2.2.2]octonium). This wearable X-ray detector, based on a MDABCO-NH4I3 thick membrane, exhibits remarkable properties including a large resistivity of 1.13 × 1011 Ω cm, a high mobility-lifetime product (μ-τ) of 1.64 × 10-4 cm2 V-1, and spin Seebeck effect coefficient of 1.9 nV K-1. We achieve a high sensitivity of 6521.6 ± 700 μC Gyair-1 cm-2 and a low detection limit of 77 nGyair s-1, ranking among the highest for biocompatible X-ray detectors. Additionally, the device exhibits effective X-ray imaging at a low dose rate of 1.87 μGyair s-1, which is approximately one-third of the dose rate used in regular medical diagnostics. Crucially, both the MDABCO-NH4I3 thick membrane and the device showcase excellent mechanical robustness. These attributes render the flexible MDABCO-NH4I3 thick membranes highly competitive for next-generation, high-performance, wearable X-ray detection applications.
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Affiliation(s)
- Xinmei Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Qingyue Cui
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Haojin Li
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Shumei Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Qi Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Wenliang Huang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Chou Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Weilun Cai
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Telun Li
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Zhou Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Chuang Ma
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Lixia Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
- Dalian National Laboratory for Clean Energy; iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Kui Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; Institute for Advanced Energy Materials; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
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Wallblom K, Lundgren S, Saleh K, Schmidtchen A, Puthia M. Image-based non-invasive assessment of suction blister wounds for clinical safety and efficacy. Wound Repair Regen 2024. [PMID: 38511666 DOI: 10.1111/wrr.13172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 02/07/2024] [Accepted: 02/25/2024] [Indexed: 03/22/2024]
Abstract
Recognising the need for objective imaging-based technologies to assess wound healing in clinical studies, the suction blister wound model offers an easily accessible wound model that creates reproducible epidermal wounds that heal without scarring. This study provides a comprehensive methodology for implementing and evaluating photography-based imaging techniques utilising the suction blister wound model. Our method encompasses a protocol for capturing consistent, high-quality photographs and procedures for quantifying these images via a visual wound healing score and a computer-assisted colour analysis of wound exudation and wound redness. We employed this methodology on 16 suction blister wounds used as controls in a clinical phase-1 trial. Our method enabled us to discern and quantify subtle differences between individual wounds concerning healing progress, erythema and wound exudation. The wound healing score exhibited a high inter-rater agreement. There was a robust correlation between the spectrophotometer-measured erythema index and photography-based wound redness, as well as between dressing protein content and photography-based dressing yellowness. In conclusion, this study equips researchers conducting clinical wound studies with reproducible methods that may support future wound research and aid in the development of new treatments.
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Affiliation(s)
- Karl Wallblom
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Dermatology, Skane University Hospital, Lund, Sweden
| | - Sigrid Lundgren
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Dermatology, Skane University Hospital, Lund, Sweden
| | - Karim Saleh
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Dermatology, Skane University Hospital, Lund, Sweden
| | - Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Dermatology, Skane University Hospital, Lund, Sweden
| | - Manoj Puthia
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Lund, Sweden
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20
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Hirst R, Courtney H, Dickinson T, Milne S, McDonnell K, Wright S, Hinds F, Benger J. Journal update monthly top five. Emerg Med J 2024; 41:268-269. [PMID: 38514203 DOI: 10.1136/emermed-2024-214024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/23/2024]
Affiliation(s)
- Robert Hirst
- Emergency Department, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | - Hannah Courtney
- Emergency Department, Great Western Hospital Foundation NHS Trust, Swindon, UK
| | - Tom Dickinson
- Emergency Department, Musgrove Park Hospital, Taunton, UK
| | | | | | - Sally Wright
- Emergency Department, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | | | - Jonathan Benger
- Faculty of Health and Life Sciences, University of the West of England, Bristol, UK
- University of the West of England, Bristol, UK
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21
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Koneru M, Paul U, Upadhyay U, Tanamala S, Golla S, Shaikh HA, Thomas AJ, Mossop CM, Tonetti DA. Correlating Age and Hematoma Volume with Extent of Midline Shift in Acute Subdural Hematoma Patients: Validation of an Artificial Intelligence Tool for Volumetric Analysis. World Neurosurg 2024:S1878-8750(24)00447-9. [PMID: 38519018 DOI: 10.1016/j.wneu.2024.03.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 03/13/2024] [Indexed: 03/24/2024]
Abstract
OBJECTIVE Decision for intervention in acute subdural hematoma patients is based on a combination of clinical and radiographic factors. Age has been suggested as a factor to be strongly considered when interpreting MLS and hematoma volume data for assessing critical clinical severity during operative intervention decisions for acute subdural hematoma patients. The objective of this study was to demonstrate the use of an automated volumetric analysis tool to measure hematoma volume and midline shift (MLS) and quantify their relationship with age. METHODS 1789 acute subdural hematoma patients were analyzed using qER-Quant software (Qure.ai, Mumbai, India) for MLS and hematoma volume measurements. Univariable and multivariable regressions analyzed association between MLS, hematoma volume, age, and MLS-hematoma volume ratio. RESULTS In comparison to younger patients (≤70 years), older patients (>70 years) had significantly higher average hematoma volume (old: 62.2 mL vs. young: 46.8 mL, p<0.0001), lower average MLS (old: 6.6 mm vs. young: 7.4 mm, p=0.025), and lower average MLS-hematoma volume ratio (old: 0.11 mm/mL vs. young 0.15 mm/mL, p<0.0001). Young patients had an average of 1.5mm greater MLS for a given hematoma volume in comparison to older patients. With increasing age, the ratio between MLS and hematoma volume significantly decreases (p=0.0002). CONCLUSION Commercially-available, automated, AI-based tools may be used for obtaining quantitative radiographic measurement data in patients with acute subdural hematoma. Our quantitative results are consistent with the qualitative relationship previously established between age, hematoma volume, and MLS, which supports the validity of using AI-based tools for acute subdural hematoma volume estimation.
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Affiliation(s)
- Manisha Koneru
- Cooper Medical School of Rowan University, 401 S Broadway, Camden, NJ, 08103, USA
| | - Umika Paul
- UMass Chan Medical School, 55 N Lake Ave, Worcester, MA, 01655, USA
| | - Ujjwal Upadhyay
- Qure.ai, Level 7, Oberoi Commerz II, Goregaon East, Mumbai, 400063, India
| | - Swetha Tanamala
- Qure.ai, Level 7, Oberoi Commerz II, Goregaon East, Mumbai, 400063, India
| | - Satish Golla
- Qure.ai, Level 7, Oberoi Commerz II, Goregaon East, Mumbai, 400063, India
| | - Hamza A Shaikh
- Department of Neurosurgery, Division of the Cooper Neurological Institute, Cooper University Health Care, 3 Cooper Plaza, Suite 104, Camden, NJ, 08103, USA
| | - Ajith J Thomas
- Department of Neurosurgery, Division of the Cooper Neurological Institute, Cooper University Health Care, 3 Cooper Plaza, Suite 104, Camden, NJ, 08103, USA
| | - Corey M Mossop
- Department of Neurosurgery, Division of the Cooper Neurological Institute, Cooper University Health Care, 3 Cooper Plaza, Suite 104, Camden, NJ, 08103, USA
| | - Daniel A Tonetti
- Department of Neurosurgery, Division of the Cooper Neurological Institute, Cooper University Health Care, 3 Cooper Plaza, Suite 104, Camden, NJ, 08103, USA.
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22
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Guo M, Higashita R, Lin C, Hu L, Chen W, Li F, Lai GWK, Nguyen A, Sakata R, Okamoto K, Tang B, Xu Y, Fu H, Gao F, Aihara M, Zhang X, Yuan J, Lin S, Leung CKS, Liu J. Crystalline lens nuclear age prediction as a new biomarker of nucleus degeneration. Br J Ophthalmol 2024; 108:513-521. [PMID: 37495263 DOI: 10.1136/bjo-2023-323176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 05/22/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND The crystalline lens is a transparent structure of the eye to focus light on the retina. It becomes muddy, hard and dense with increasing age, which makes the crystalline lens gradually lose its function. We aim to develop a nuclear age predictor to reflect the degeneration of the crystalline lens nucleus. METHODS First we trained and internally validated the nuclear age predictor with a deep-learning algorithm, using 12 904 anterior segment optical coherence tomography (AS-OCT) images from four diverse Asian and American cohorts: Zhongshan Ophthalmic Center with Machine0 (ZOM0), Tomey Corporation (TOMEY), University of California San Francisco and the Chinese University of Hong Kong. External testing was done on three independent datasets: Tokyo University (TU), ZOM1 and Shenzhen People's Hospital (SPH). We also demonstrate the possibility of detecting nuclear cataracts (NCs) from the nuclear age gap. FINDINGS In the internal validation dataset, the nuclear age could be predicted with a mean absolute error (MAE) of 2.570 years (95% CI 1.886 to 2.863). Across the three external testing datasets, the algorithm achieved MAEs of 4.261 years (95% CI 3.391 to 5.094) in TU, 3.920 years (95% CI 3.332 to 4.637) in ZOM1-NonCata and 4.380 years (95% CI 3.730 to 5.061) in SPH-NonCata. The MAEs for NC eyes were 8.490 years (95% CI 7.219 to 9.766) in ZOM1-NC and 9.998 years (95% CI 5.673 to 14.642) in SPH-NC. The nuclear age gap outperformed both ophthalmologists in detecting NCs, with areas under the receiver operating characteristic curves of 0.853 years (95% CI 0.787 to 0.917) in ZOM1 and 0.909 years (95% CI 0.828 to 0.978) in SPH. INTERPRETATION The nuclear age predictor shows good performance, validating the feasibility of using AS-OCT images as an effective screening tool for nucleus degeneration. Our work also demonstrates the potential use of the nuclear age gap to detect NCs.
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Affiliation(s)
- Mengjie Guo
- Research Institute of Trustworthy Autonomous Systems, Southern University of Science and Technology, Shenzhen, Guangdong, China
- School of Information Science and Technology, ShanghaiTech University, Shanghai, China
| | - Risa Higashita
- Department of Computer Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China
- Tomey Corporation, Nagoya, Aichi, Japan
| | - Chen Lin
- Shenzhen People's Hospital, Shenzhen, Guangdong, China
| | - Lingxi Hu
- Research Institute of Trustworthy Autonomous Systems, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Wan Chen
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Fei Li
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Gilda Wing Ki Lai
- Department of Ophthalmology, The University of Hong Kong, Hong Kong, Hong Kong
| | - Anwell Nguyen
- Department of Ophthalmology, University of California, San Francisco, California, USA
| | - Rei Sakata
- Department of Ophthalmology, The University of Tokyo, Tokyo, Japan
| | | | - Bo Tang
- Research Institute of Trustworthy Autonomous Systems, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Yanwu Xu
- Intelligent Healthcare Unit, Baidu Inc, Beijing, China
| | - Huazhu Fu
- Institute of High Performance Computing, Agency for Science, Technology and Research, Singapore
| | - Fei Gao
- School of Information Science and Technology, ShanghaiTech University, Shanghai, China
| | - Makoto Aihara
- Department of Ophthalmology, The University of Tokyo, Tokyo, Japan
| | - Xiulan Zhang
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jin Yuan
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Shan Lin
- Department of Ophthalmology, University of California, San Francisco, California, USA
- Glaucoma Center of San Francisco, San Francisco, California, USA
| | - Christopher Kai-Shun Leung
- Department of Ophthalmology, The University of Hong Kong, Hong Kong, Hong Kong
- Department of Ophthalmology and Visual Sciences, The Chinese University, Hong Kong, Hong Kong
| | - Jiang Liu
- Research Institute of Trustworthy Autonomous Systems, Southern University of Science and Technology, Shenzhen, Guangdong, China
- Department of Computer Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China
- Cixi Institute of Biomedical Engineering, Chinese Academy of Sciences, Cixi, Zhejiang, China
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23
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Büttner T, Gärtner F, Essler M, Weiten R, Kristiansen G, Ellinger J, Ritter M, Krausewitz P. Key learnings from concordant systematic biopsies in prostate-specific membrane antigen positron emission tomography/computed tomography-guided prostate biopsies: Enhancing targeting accuracy. Prostate 2024. [PMID: 38504659 DOI: 10.1002/pros.24694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/05/2024] [Accepted: 03/12/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND Prostate cancer (PCa) diagnosis and staging have evolved with the advent of 68Ga-Prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA-PET/CT). This study investigates the role of complementary systematic biopsies (SB) during PSMA-PET/CT-guided targeted prostate biopsies (PET-TB) for PCa detection, grading, and distribution. We address the uncertainty surrounding the necessity of SB in conjunction with PET-TB. METHODS We analyzed PCa grading and distribution in 30 men who underwent PET-TB and SB because of contraindication to magnetic resonance imaging or high clinical suspicion of PCa. Tumor distribution was assessed in relation to the PET-highlighted lesions. Standardized reporting schemes, encompassing SUVmax , PRIMARY score, and miTNM classification, were evaluated. RESULTS 80% of patients were diagnosed with PCa, with 70% classified as clinically significant (csPCa). SB detected more csPCa cases than PET-TB, but the differences were not statistically significant. Discordant results were observed in 25% of cases, where SB outperformed PET-TB. Spatial analysis revealed that tumor-bearing cores from SB were often located in close proximity to the PET-highlighted region. Reporting schemes showed potential for csPCa detection with significantly increased SUVmax in csPCA patients. Subsequent follow-up data underscored the importance of SB in precise PCa grading and staging. CONCLUSIONS While PET-TB can simplify prostate biopsy and reduce invasiveness by core number, SB cannot be omitted yet due to potential PET-TB targeting errors. Factors such as limited spatial resolution and fusion inaccuracies contribute to the need for SB. Standardization in reporting schemes currently cannot compensate for targeting errors highlighting the need for refinement.
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Affiliation(s)
- Thomas Büttner
- Department of Urology and Paediatric Urology, University Hospital Bonn, Bonn, Germany
| | - Florian Gärtner
- Department of Nuclear Medicine, University Hospital Bonn, Bonn, Germany
| | - Markus Essler
- Department of Nuclear Medicine, University Hospital Bonn, Bonn, Germany
| | - Richard Weiten
- Department of Urology and Paediatric Urology, University Hospital Bonn, Bonn, Germany
| | | | - Jörg Ellinger
- Department of Urology and Paediatric Urology, University Hospital Bonn, Bonn, Germany
| | - Manuel Ritter
- Department of Urology and Paediatric Urology, University Hospital Bonn, Bonn, Germany
| | - Philipp Krausewitz
- Department of Urology and Paediatric Urology, University Hospital Bonn, Bonn, Germany
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24
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Lindstedt S, Wang Q, Niroomand A, Stenlo M, Hyllen S, Pierre L, Olm F, Bechet NB. High resolution fluorescence imaging of the alveolar scaffold as a novel tool to assess lung injury. Sci Rep 2024; 14:6662. [PMID: 38509285 PMCID: PMC10954697 DOI: 10.1038/s41598-024-57313-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 03/17/2024] [Indexed: 03/22/2024] Open
Abstract
Acute lung injury (ALI) represents an aetiologically diverse form of pulmonary damage. Part of the assessment and diagnosis of ALI depends on skilled observer-based scoring of brightfield microscopy tissue sections. Although this readout is sufficient to determine gross alterations in tissue structure, its categorical scores lack the sensitivity to describe more subtle changes in lung morphology. To generate a more sensitive readout of alveolar perturbation we carried out high resolution immunofluorescence imaging on 200 μm lung vibratome sections from baseline and acutely injured porcine lung tissue, stained with a tomato lectin, Lycopersicon Esculentum Dylight-488. With the ability to resolve individual alveoli along with their inner and outer wall we generated continuous readouts of alveolar wall thickness and circularity. From 212 alveoli traced from 10 baseline lung samples we established normal distributions for alveolar wall thickness (27.37; 95% CI [26.48:28.26]) and circularity (0.8609; 95% CI [0.8482:0.8667]) in healthy tissue. Compared to acutely injured lung tissue baseline tissue exhibited a significantly lower wall thickness (26.86 ± 0.4998 vs 50.55 ± 4.468; p = 0.0003) and higher degree of circularityϕ≤ (0.8783 ± 0.01965 vs 0.4133 ± 0.04366; p < 0.0001). These two components were subsequently combined into a single more sensitive variable, termed the morphological quotient (MQ), which exhibited a significant negative correlation (R2 = 0.9919, p < 0.0001) with the gold standard of observer-based scoring. Through the utilisation of advanced light imaging we show it is possible to generate sensitive continuous datasets describing fundamental morphological changes that arise in acute lung injury. These data represent valuable new analytical tools that can be used to precisely benchmark changes in alveolar morphology both in disease/injury as well as in response to treatment/therapy.
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Affiliation(s)
- Sandra Lindstedt
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden.
- Department of Clinical Sciences, Lund University, Lund, Sweden.
- Lund Stem Cell Centre, Lund University, Lund, Sweden.
- Department of Cardiothoracic Surgery and Transplantation, Skåne University Hospital, Lund, Sweden.
| | - Qi Wang
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Lund Stem Cell Centre, Lund University, Lund, Sweden
| | - Anna Niroomand
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Lund Stem Cell Centre, Lund University, Lund, Sweden
| | - Martin Stenlo
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Lund Stem Cell Centre, Lund University, Lund, Sweden
- Department of Cardiothoracic Anaesthesia and Intensive Care, Skåne University Hospital, Lund, Sweden
| | - Snejana Hyllen
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Lund Stem Cell Centre, Lund University, Lund, Sweden
- Department of Cardiothoracic Anaesthesia and Intensive Care, Skåne University Hospital, Lund, Sweden
| | - Leif Pierre
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Lund Stem Cell Centre, Lund University, Lund, Sweden
- Department of Cardiothoracic Surgery and Transplantation, Skåne University Hospital, Lund, Sweden
| | - Franziska Olm
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Lund Stem Cell Centre, Lund University, Lund, Sweden
- Department of Cardiothoracic Surgery and Transplantation, Skåne University Hospital, Lund, Sweden
| | - Nicholas B Bechet
- Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden.
- Department of Clinical Sciences, Lund University, Lund, Sweden.
- Lund Stem Cell Centre, Lund University, Lund, Sweden.
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25
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Toh ZA, Berg B, Han QYC, Hey HWD, Pikkarainen M, Grotle M, He HG. Clinical Decision Support System Used in Spinal Disorders: Scoping Review. J Med Internet Res 2024; 26:e53951. [PMID: 38502157 DOI: 10.2196/53951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/29/2024] [Accepted: 02/10/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Spinal disorders are highly prevalent worldwide with high socioeconomic costs. This cost is associated with the demand for treatment and productivity loss, prompting the exploration of technologies to improve patient outcomes. Clinical decision support systems (CDSSs) are computerized systems that are increasingly used to facilitate safe and efficient health care. Their applications range in depth and can be found across health care specialties. OBJECTIVE This scoping review aims to explore the use of CDSSs in patients with spinal disorders. METHODS We used the Joanna Briggs Institute methodological guidance for this scoping review and reported according to the PRISMA-ScR (Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews) statement. Databases, including PubMed, Embase, Cochrane, CINAHL, Web of Science, Scopus, ProQuest, and PsycINFO, were searched from inception until October 11, 2022. The included studies examined the use of digitalized CDSSs in patients with spinal disorders. RESULTS A total of 4 major CDSS functions were identified from 31 studies: preventing unnecessary imaging (n=8, 26%), aiding diagnosis (n=6, 19%), aiding prognosis (n=11, 35%), and recommending treatment options (n=6, 20%). Most studies used the knowledge-based system. Logistic regression was the most commonly used method, followed by decision tree algorithms. The use of CDSSs to aid in the management of spinal disorders was generally accepted over the threat to physicians' clinical decision-making autonomy. CONCLUSIONS Although the effectiveness was frequently evaluated by examining the agreement between the decisions made by the CDSSs and the health care providers, comparing the CDSS recommendations with actual clinical outcomes would be preferable. In addition, future studies on CDSS development should focus on system integration, considering end user's needs and preferences, and external validation and impact studies to assess effectiveness and generalizability. TRIAL REGISTRATION OSF Registries osf.io/dyz3f; https://osf.io/dyz3f.
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Affiliation(s)
- Zheng An Toh
- National University Hospital, National University Health System, Singapore, Singapore
| | - Bjørnar Berg
- Centre for Intelligent Musculoskeletal Health, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | | | - Hwee Weng Dennis Hey
- Division of Orthopaedic Surgery, National University Hospital, National University Health System, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Minna Pikkarainen
- Department of Rehabilitation and Health Technology, Oslo Metropolitan University, Oslo, Norway
- Martti Ahtisaari Institute, Oulu Business School, Oulu University, Oulu, Finland
- Department of Product Design, Oslo Metropolitan University, Oslo, Norway
| | - Margreth Grotle
- Centre for Intelligent Musculoskeletal Health, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
- Department of Research and Innovation, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
| | - Hong-Gu He
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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26
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Vaidya A. The Promise of Nuclear Imaging as an Alternative to Adrenal Venous Sampling for the Detection of Aldosterone-producing Adenomas. J Clin Endocrinol Metab 2024; 109:e1363-e1364. [PMID: 37697945 DOI: 10.1210/clinem/dgad542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Affiliation(s)
- Anand Vaidya
- Center for Adrenal Disorders, Brigham and Women's Hospital, Division of Endocrinology, Diabetes, and Hypertension, Harvard Medical School, Boston, MA 02115, USA
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27
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Williams JL, Perry JL, Snodgrass TD, Singh DJ, Temkit M, Sitzman TJ. Can MRI Replace Nasopharyngoscopy in the Evaluation of Velopharyngeal Insufficiency? Cleft Palate Craniofac J 2024:10556656241239459. [PMID: 38490221 DOI: 10.1177/10556656241239459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024] Open
Abstract
OBJECTIVE To investigate whether flexible nasopharyngoscopy, when performed in addition to magnetic resonance imaging (MRI), influences the type of surgery selected or success of surgery in patients with velopharyngeal insufficiency (VPI). DESIGN Cohort study. SETTING A metropolitan children's hospital. PATIENTS Patients with non-syndromic, repaired cleft palate presenting for management of VPI. INTERVENTIONS MRI and nasopharyngoscopy or MRI alone for preoperative imaging of the velopharyngeal mechanism. MAIN OUTCOME MEASURES (1) Surgical selection and (2) resolution of hypernasality. All speech, MRI, and nasopharyngoscopy measurements were performed by raters blinded to patients' medical and surgical history. RESULTS Of the 25 patients referred for nasopharyngoscopy, 76% completed the exam. Of the 41 patients referred for MRI, the scan was successfully completed by 98% of patients. Completion of nasopharyngoscopy was significantly (p=0.01) lower than MRI. Surgical selection did not significantly differ (p=0.73) between the group receiving MRI and nasopharyngoscopy and the group receiving MRI alone, nor was there a significant difference between these groups in the proportion of patients achieving resolution of hypernasality postoperatively (p=0.63). Percent total velopharyngeal closure assessments on nasopharyngoscopy and MRI were strongly correlated (r=0.73). CONCLUSIONS In patients receiving MRI as part of their preoperative VPI evaluation, the addition of nasopharyngoscopy did not result in a difference in surgical selection or resolution of hypernasality. Routine inclusion of nasopharyngoscopy may not be necessary for the evaluation of velopharyngeal anatomy when MRI is available.
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Affiliation(s)
- Jessica L Williams
- Phoenix Children's Center for Cleft and Craniofacial, Phoenix Children's Hospital, Phoenix, AZ, USA
- Division of Plastic Surgery, Phoenix Children's Hospital, Phoenix, AZ, USA
- Program of Speech and Hearing Science, College of Health Solutions, Arizona State University, Tempe, AZ, USA
| | - Jamie L Perry
- Department of Communication Sciences and Disorders, East Carolina University, Greenville, NC, USA
| | - Taylor D Snodgrass
- Department of Communication Sciences and Disorders, East Carolina University, Greenville, NC, USA
| | - Davinder J Singh
- Phoenix Children's Center for Cleft and Craniofacial, Phoenix Children's Hospital, Phoenix, AZ, USA
- Division of Plastic Surgery, Phoenix Children's Hospital, Phoenix, AZ, USA
- Division of Plastic Surgery, Mayo Clinic Arizona, Scottsdale, AZ, USA
- Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA
| | - M'hamed Temkit
- Department of Clinical Research, Phoenix Children's Hospital, Phoenix, AZ, USA
| | - Thomas J Sitzman
- Phoenix Children's Center for Cleft and Craniofacial, Phoenix Children's Hospital, Phoenix, AZ, USA
- Division of Plastic Surgery, Phoenix Children's Hospital, Phoenix, AZ, USA
- Division of Plastic Surgery, Mayo Clinic Arizona, Scottsdale, AZ, USA
- Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA
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28
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Morandell K, Yin A, Triana Del Rio R, Schneider DM. Movement-Related Modulation in Mouse Auditory Cortex Is Widespread Yet Locally Diverse. J Neurosci 2024; 44:e1227232024. [PMID: 38286628 PMCID: PMC10941236 DOI: 10.1523/jneurosci.1227-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 12/12/2023] [Accepted: 01/15/2024] [Indexed: 01/31/2024] Open
Abstract
Neurons in the mouse auditory cortex are strongly influenced by behavior, including both suppression and enhancement of sound-evoked responses during movement. The mouse auditory cortex comprises multiple fields with different roles in sound processing and distinct connectivity to movement-related centers of the brain. Here, we asked whether movement-related modulation in male mice might differ across auditory cortical fields, thereby contributing to the heterogeneity of movement-related modulation at the single-cell level. We used wide-field calcium imaging to identify distinct cortical fields and cellular-resolution two-photon calcium imaging to visualize the activity of layer 2/3 excitatory neurons within each field. We measured each neuron's responses to three sound categories (pure tones, chirps, and amplitude-modulated white noise) as mice rested and ran on a non-motorized treadmill. We found that individual neurons in each cortical field typically respond to just one sound category. Some neurons are only active during rest and others during locomotion, and those that are responsive across conditions retain their sound-category tuning. The effects of locomotion on sound-evoked responses vary at the single-cell level, with both suppression and enhancement of neural responses, and the net modulatory effect of locomotion is largely conserved across cortical fields. Movement-related modulation in auditory cortex also reflects more complex behavioral patterns, including instantaneous running speed and nonlocomotor movements such as grooming and postural adjustments, with similar patterns seen across all auditory cortical fields. Our findings underscore the complexity of movement-related modulation throughout the mouse auditory cortex and indicate that movement-related modulation is a widespread phenomenon.
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Affiliation(s)
- Karin Morandell
- Center for Neural Science, New York University, New York, New York 10012
| | - Audrey Yin
- Center for Neural Science, New York University, New York, New York 10012
| | | | - David M Schneider
- Center for Neural Science, New York University, New York, New York 10012
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29
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Zhou Y, Zhang Z, Yang X, Liu T, He G, Lin C, Huang WT, Liu H, Wang Y, Wang Y, Xiang Z, Shan CX. Solar-Blind Photodetector Arrays Fabricated by Weaving Strategy. ACS Nano 2024; 18:7610-7617. [PMID: 38426715 DOI: 10.1021/acsnano.4c00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
The quest for solar-blind photodetectors (SBPDs) with exceptional optoelectronic properties for imaging applications has prompted the investigation of SBPD arrays. Ga2O3, characterized by its ultrawide bandgap and low growth cost, has emerged as a promising material for solar-blind detection. In this study, SBPD arrays were fabricated by weaving Sn-doped β-Ga2O3 microbelts (MBs). These MBs, which have a conductive core surrounded by a high-resistivity depletion surface layer resulting from the segregation of Sn and oxygen, are woven into a grid structure. Each intersection of the MBs functions as a photodetector pixel, with the intersecting MBs serving as the output electrodes of the pixel. This design simplifies the readout circuit for the photodetector array. The solar-blind photodetector array demonstrates superior solar-blind detection performance, including a dark current of 0.5 pA, a response time of 38.8 μs, a light/dark current ratio of 108, and a responsivity of 300 A/W. This research may provide a feasible strategy for the fabrication of photodetector arrays, thus pushing forward the application of photodetectors in imaging.
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Affiliation(s)
- Ying Zhou
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Zhenfeng Zhang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Xun Yang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Tong Liu
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Gaohang He
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Chaonan Lin
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Wen-Tao Huang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Hang Liu
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Yong Wang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Yanan Wang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - ZhiYu Xiang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Chong-Xin Shan
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
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30
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Moscoso M, Novikov A, Papanicolaou G, Tsogka C. Correlation-informed ordered dictionary learning for imaging in complex media. Proc Natl Acad Sci U S A 2024; 121:e2314697121. [PMID: 38451944 PMCID: PMC10945802 DOI: 10.1073/pnas.2314697121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 02/04/2024] [Indexed: 03/09/2024] Open
Abstract
We propose a method for imaging in scattering media when large and diverse datasets are available. It has two steps. Using a dictionary learning algorithm the first step estimates the true Green's function vectors as columns in an unordered sensing matrix. The array data comes from many sparse sets of sources whose location and strength are not known to us. In the second step, the columns of the estimated sensing matrix are ordered for imaging using the multidimensional scaling algorithm with connectivity information derived from cross-correlations of its columns, as in time reversal. For these two steps to work together, we need data from large arrays of receivers so the columns of the sensing matrix are incoherent for the first step, as well as from sub-arrays so that they are coherent enough to obtain connectivity needed in the second step. Through simulation experiments, we show that the proposed method is able to provide images in complex media whose resolution is that of a homogeneous medium.
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Affiliation(s)
- Miguel Moscoso
- Department of Mathematics, Universidad Carlos III de Madrid, Leganes, Madrid28911, Spain
| | - Alexei Novikov
- Department of Mathematics, Pennsylvania State University, University Park, PA16802
| | | | - Chrysoula Tsogka
- Department of Applied Mathematics, University of California, Merced, CA95343
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31
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Longfield SF, Gormal RS, Feller M, Parutto P, Reingruber J, Wallis TP, Joensuu M, Augustine GJ, Martínez-Mármol R, Holcman D, Meunier FA. Synapsin 2a tetramerisation selectively controls the presynaptic nanoscale organisation of reserve synaptic vesicles. Nat Commun 2024; 15:2217. [PMID: 38472171 PMCID: PMC10933366 DOI: 10.1038/s41467-024-46256-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
Neurotransmitter release relies on the regulated fusion of synaptic vesicles (SVs) that are tightly packed within the presynaptic bouton of neurons. The mechanism by which SVs are clustered at the presynapse, while preserving their ability to dynamically recycle to support neuronal communication, remains unknown. Synapsin 2a (Syn2a) tetramerization has been suggested as a potential clustering mechanism. Here, we used Dual-pulse sub-diffractional Tracking of Internalised Molecules (DsdTIM) to simultaneously track single SVs from the recycling and the reserve pools, in live hippocampal neurons. The reserve pool displays a lower presynaptic mobility compared to the recycling pool and is also present in the axons. Triple knockout of Synapsin 1-3 genes (SynTKO) increased the mobility of reserve pool SVs. Re-expression of wild-type Syn2a (Syn2aWT), but not the tetramerization-deficient mutant K337Q (Syn2aK337Q), fully rescued these effects. Single-particle tracking revealed that Syn2aK337QmEos3.1 exhibited altered activity-dependent presynaptic translocation and nanoclustering. Therefore, Syn2a tetramerization controls its own presynaptic nanoclustering and thereby contributes to the dynamic immobilisation of the SV reserve pool.
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Affiliation(s)
- Shanley F Longfield
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Rachel S Gormal
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Matis Feller
- Group of Data Modelling and Computational Biology, IBENS, Ecole Normale Superieure, 75005, Paris, France
| | - Pierre Parutto
- Group of Data Modelling and Computational Biology, IBENS, Ecole Normale Superieure, 75005, Paris, France
| | - Jürgen Reingruber
- Group of Data Modelling and Computational Biology, IBENS, Ecole Normale Superieure, 75005, Paris, France
| | - Tristan P Wallis
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Merja Joensuu
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | | | - Ramón Martínez-Mármol
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - David Holcman
- Group of Data Modelling and Computational Biology, IBENS, Ecole Normale Superieure, 75005, Paris, France
- Department of Applied Mathematics and Theoretical Physics (DAMPT) visitor, University of Cambridge, and Churchill College, CB30DS, Cambridge, UK
| | - Frédéric A Meunier
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia.
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.
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Nakao T, Miki S, Nakamura Y, Kikuchi T, Nomura Y, Hanaoka S, Yoshikawa T, Abe O. Capability of GPT-4V(ision) in the Japanese National Medical Licensing Examination: Evaluation Study. JMIR Med Educ 2024; 10:e54393. [PMID: 38470459 DOI: 10.2196/54393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/26/2023] [Accepted: 02/16/2024] [Indexed: 03/13/2024]
Abstract
BACKGROUND Previous research applying large language models (LLMs) to medicine was focused on text-based information. Recently, multimodal variants of LLMs acquired the capability of recognizing images. OBJECTIVE We aim to evaluate the image recognition capability of generative pretrained transformer (GPT)-4V, a recent multimodal LLM developed by OpenAI, in the medical field by testing how visual information affects its performance to answer questions in the 117th Japanese National Medical Licensing Examination. METHODS We focused on 108 questions that had 1 or more images as part of a question and presented GPT-4V with the same questions under two conditions: (1) with both the question text and associated images and (2) with the question text only. We then compared the difference in accuracy between the 2 conditions using the exact McNemar test. RESULTS Among the 108 questions with images, GPT-4V's accuracy was 68% (73/108) when presented with images and 72% (78/108) when presented without images (P=.36). For the 2 question categories, clinical and general, the accuracies with and those without images were 71% (70/98) versus 78% (76/98; P=.21) and 30% (3/10) versus 20% (2/10; P≥.99), respectively. CONCLUSIONS The additional information from the images did not significantly improve the performance of GPT-4V in the Japanese National Medical Licensing Examination.
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Affiliation(s)
- Takahiro Nakao
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Soichiro Miki
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Yuta Nakamura
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Tomohiro Kikuchi
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
- Department of Radiology, School of Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Yukihiro Nomura
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
- Center for Frontier Medical Engineering, Chiba University, Inage-ku, Chiba, Japan
| | - Shouhei Hanaoka
- Department of Radiology, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Takeharu Yoshikawa
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Osamu Abe
- Department of Radiology, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
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33
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Weber I, Zagona-Prizio C, Sivesind TE, Adelman M, Szeto MD, Liu Y, Sillau SH, Bainbridge J, Klawitter J, Sempio C, Dunnick CA, Leehey MA, Dellavalle RP. Oral Cannabidiol for Seborrheic Dermatitis in Patients With Parkinson Disease: Randomized Clinical Trial. JMIR Dermatol 2024; 7:e49965. [PMID: 38466972 DOI: 10.2196/49965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 01/23/2024] [Accepted: 01/28/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND Seborrheic dermatitis (SD) affects 18.6%-59% of persons with Parkinson disease (PD), and recent studies provide evidence that oral cannabidiol (CBD) therapy could reduce sebum production in addition to improving motor and psychiatric symptoms in PD. Therefore, oral CBD could be useful for improving symptoms of both commonly co-occurring conditions. OBJECTIVE This study investigates whether oral CBD therapy is associated with a decrease in SD severity in PD. METHODS Facial photographs were collected as a component of a randomized (1:1 CBD vs placebo), parallel, double-blind, placebo-controlled trial assessing the efficacy of a short-term 2.5 mg per kg per day oral sesame solution CBD-rich cannabis extract (formulated to 100 mg/mL CBD and 3.3 mg/mL THC) for reducing motor symptoms in PD. Participants took 1.25 mg per kg per day each morning for 4 ±1 days and then twice daily for 10 ±4 days. Reviewers analyzed the photographs independently and provided a severity ranking based on the Seborrheic Dermatitis Area and Severity Index (SEDASI) scale. Baseline demographic and disease characteristics, as well as posttreatment SEDASI averages and the presence of SD, were analyzed with 2-tailed t tests and Pearson χ2 tests. SEDASI was analyzed with longitudinal regression, and SD was analyzed with generalized estimating equations. RESULTS A total of 27 participants received a placebo and 26 received CBD for 16 days. SD severity was low in both groups at baseline, and there was no treatment effect. The risk ratio for patients receiving CBD, post versus pre, was 0.69 (95% CI 0.41-1.18; P=.15), compared to 1.20 (95% CI 0.88-1.65; P=.26) for the patients receiving the placebo. The within-group pre-post change was not statistically significant for either group, but they differed from each other (P=.07) because there was an estimated improvement for the CBD group and an estimated worsening for the placebo group. CONCLUSIONS This study does not provide solid evidence that oral CBD therapy reduces the presence of SD among patients with PD. While this study was sufficiently powered to detect the primary outcome (efficacy of CBD on PD motor symptoms), it was underpowered for the secondary outcomes of detecting changes in the presence and severity of SD. Multiple mechanisms exist through which CBD can exert beneficial effects on SD pathogenesis. Larger studies, including participants with increased disease severity and longer treatment periods, may better elucidate treatment effects and are needed to determine CBD's true efficacy for affecting SD severity. TRIAL REGISTRATION ClinicalTrials.gov NCT03582137; https://clinicaltrials.gov/ct2/show/NCT03582137.
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Affiliation(s)
- Isaac Weber
- Mercy Hopsital St. Louis, St. Louis, MO, United States
| | - Caterina Zagona-Prizio
- Department of Dermatology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Torunn E Sivesind
- Department of Dermatology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Madeline Adelman
- Department of Dermatology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Mindy D Szeto
- Department of Dermatology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Ying Liu
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Stefan H Sillau
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Jacquelyn Bainbridge
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Jost Klawitter
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Cristina Sempio
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Cory A Dunnick
- Department of Dermatology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Maureen A Leehey
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Robert P Dellavalle
- Department of Dermatology, University of Colorado School of Medicine, Aurora, CO, United States
- Dermatology Service, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO, United States
- Colorado School of Public Health, Aurora, CO, United States
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Chiu CH, Yang DJ, Liou YC, Chang WC, Yu TH, Chung MC, Lee YC, Chen IJ, Wang PY, Lin CP, Tsay HJ, Yeh SHH. Assessment of DNA/RNA Deregulation in Cancer Using 99mTc-Labeled Thiopurine. Cancer Biother Radiopharm 2024. [PMID: 38457659 DOI: 10.1089/cbr.2023.0148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024] Open
Abstract
Background: DNA biomarkers are useful for the assessment of tumor cell proliferation. The authors aimed to synthesize a thiopurine-based ligand for evaluation of nuclear uptake and tumor localization. Materials and Methods: A 2-hydroxypropyl spacer was incorporated between a chelator (cyclam) and thiopurine ligand to produce SC-06-L1. In vitro cellular uptake and the cell/media ratios of [99mTc]Tc-SC-06-L1 were assessed in breast (MCF-7, MDA-MB-231) and ovarian (TOV-112D, OVCAR3) cancer cells. The nuclear and cytosolic uptake ratio of [99mTc]Tc-SC-06-L1 was determined in OVCAR-3 and MCF-7 cells. Cytotoxicity assays and flow cytometric analysis of cell cycle apoptosis were conducted in cancer cells treated with SC-06-L1. Imaging was conducted in tumor-bearing mice; fluorine-18-2'-fluorodeoxyglucose ([18F]FDG) was used as a control. Results: The radiochemical purity of [99mTc]Tc-SC-06-L1 was >95%. [99mTc]Tc-SC-06-L1 exhibited higher cell-to-media ratios than [18F]FDG in cancer cells. [99mTc]Tc-SC-06-L1 had high uptake in the nuclear fractions in OVCAR-3 and MCF-7 cells, with nuclear/cytosolic ratios of 8 and 2, respectively. Cytotoxicity assays showed that SC-06-L1 was non-toxic compared with azathioprine in breast and ovarian cancer cells. Conclusions: [99mTc]Tc-SC-06-L1 was stable and involved in nuclear activities. [99mTc]Tc-SC-06-L1 showed non-toxic to cancer cells and exhibited fast kinetic uptake patterns for tumor imaging. [99mTc]Tc-SC-06-L1 represents a promising biomarker for imaging purine pathway-directed systems.
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Affiliation(s)
- Chuang-Hsin Chiu
- Department of Nuclear Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - David J Yang
- Seecure/Taiwan Hopax Chemicals MFG Company Ltd., Kaohsiung, Taiwan
| | - Yi-Chen Liou
- Institute of Neuroscience, National Chaio Tung University, Taipei, Taiwan
| | - Wei-Chung Chang
- Seecure/Taiwan Hopax Chemicals MFG Company Ltd., Kaohsiung, Taiwan
| | - Tsung-Hsun Yu
- Brain Research Center, National Chaio Tung University, Taipei, Taiwan
- Brain Research Center, School of Medicine, National Defense Medical Center Taipei, Taiwan
| | - Min-Ching Chung
- Seecure/Taiwan Hopax Chemicals MFG Company Ltd., Kaohsiung, Taiwan
| | - Yen-Chun Lee
- Seecure/Taiwan Hopax Chemicals MFG Company Ltd., Kaohsiung, Taiwan
| | - Ing-Jou Chen
- Department of Nuclear Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Pao-Yeh Wang
- Brain Research Center, School of Medicine, National Defense Medical Center Taipei, Taiwan
| | - Ching-Po Lin
- Institute of Neuroscience, National Chaio Tung University, Taipei, Taiwan
| | - Hey-Jen Tsay
- Institute of Neuroscience, National Chaio Tung University, Taipei, Taiwan
| | - Skye Hsin-Hsien Yeh
- Brain Research Center, National Chaio Tung University, Taipei, Taiwan
- Brain Research Center, School of Medicine, National Defense Medical Center Taipei, Taiwan
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Li M, Zhuang L, Hu S, Sun L, Liu Y, Dou Z, Jiang T. Intelligent diagnosis of lung nodule images based on machine learning in the context of lung teaching. Medicine (Baltimore) 2024; 103:e37266. [PMID: 38457590 PMCID: PMC10919509 DOI: 10.1097/md.0000000000037266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 01/21/2024] [Accepted: 01/24/2024] [Indexed: 03/10/2024] Open
Abstract
The vast majority of intelligent diagnosis models have widespread problems, which seriously affect the medical staff judgment of patients' injuries. So depending on the situation, you need to use different algorithms, The study suggests a model for intelligent diagnosis of lung nodule images based on machine learning, and a support vector machine-based machine learning algorithm is selected. In order to improve the diagnostic accuracy of intelligent diagnosis of lung nodule images as well as the diagnostic model of lung nodule images. The objectives are broken down into algorithm determination and model construction, and the proposed optimized model is solved using machine learning techniques in order to achieve the original algorithm selected for intelligent diagnosis of lung nodule photos. The validation findings demonstrated that dimensionality reduction of the features produced 17 × 1120 and 17 × 2980 non-node matrices with 1216 nodes and 3407 non-nodes in 17 features. The support vector machine classification method has more benefits in terms of accuracy, sensitivity, and specificity when compared to other classification methods. Since there were some anomalies among both benign and malignant tumors and no discernible difference between them, the distribution of median values revealed that the data was symmetrical in terms of texture and gray scale. Non-small nodules can be identified from benign nodules, but more training is needed to separate them from the other 2 types. Pulmonary nodules are a common disease. MN are distinct from the other 2 types, non-small nodules and benign small nodules, which require further training to differentiate. This has great practical value in teaching practice. Therefore, building a machine learning-based intelligent diagnostic model for pulmonary nodules is of significant importance in helping to solve medical imaging diagnostic problems.
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Affiliation(s)
- Miaomiao Li
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, People’s Republic of China
| | - Lilei Zhuang
- Department of Gastroenterology, Yiwu Central Hospital, Yiwu, Zhejiang, People’s Republic of China
| | - Sheng Hu
- Department of Radiology, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, People’s Republic of China
| | - Li Sun
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, People’s Republic of China
| | - Yangxiang Liu
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, People’s Republic of China
| | - Zhengwei Dou
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, People’s Republic of China
| | - Tao Jiang
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, Zhejiang, People’s Republic of China
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36
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Giorgees I, Affe V, Williams I, Desaulniers JP. Direct Conjugation of Gallium-(III)-Corroles to Short Interfering RNA(siRNA) Providing Real-Time siRNA Imaging and Gene Silencing. Chempluschem 2024:e202400084. [PMID: 38457624 DOI: 10.1002/cplu.202400084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/10/2024]
Abstract
Discovering new modifications for oligonucleotide therapeutics is essential for expanding its application to new targets and diseases. In this project, we focus on conjugating metaled ligands to short interfering RNAs (siRNAs) to investigate robust and simple conjugation methods for adding new properties such as real-time imaging to the siRNA. Here we report the chemical synthesis of novel Ga-(III)-corroles for their direct conjugation to siRNAs. Ga-(III)-corrole-siRNAs showed promising results when evaluated for gene silencing and live cell imaging. The knockdown activity of the firefly luciferase reporter gene was measured to evaluate gene silencing activity. Gene silencing studies from two 5'-Ga-(III)-labeled-siRNAs exhibited dose-dependent knockdown with IC50s of 812.7 and 451.4 pM, which is comparable to wild-type (IC50=439.7 pM) in the absence of red light, and IC50s of 562.9 and 354.5 pM, which is also comparable to wild-type (IC50=337.4 pM), in the presence of red light. In addition, imaging studies with Ga-(III)-corrole-modified siRNAs showed intense fluorescence in HeLa cells, highlighting that the Ga-(III)-corrole modification is an effective fluorophore for siRNA tracing and imaging. Moreover, the photodynamic activity of free base corrole vs the Ga-(III)-corrole was evaluated. Results show an increase of light cytotoxicity of the corrole ligand upon the addition of Ga-(III); however, no phototoxicity was observed when Ga-(III) ligands were linked to siRNA. In conclusion, Ga-(III)-corrole-siRNAs show promising results for applications in simultaneous real-time imaging and gene silencing.
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Affiliation(s)
- Ifrodet Giorgees
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario, Canada, L1G 0C5
| | - Vanessa Affe
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario, Canada, L1G 0C5
| | - Islah Williams
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario, Canada, L1G 0C5
| | - Jean-Paul Desaulniers
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario, Canada, L1G 0C5
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Erratum: Delimiting MOGAD as a disease entity using translational imaging. Front Neurol 2024; 15:1390688. [PMID: 38515453 PMCID: PMC10956577 DOI: 10.3389/fneur.2024.1390688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/23/2024] Open
Abstract
[This corrects the article DOI: 10.3389/fneur.2023.1216477.].
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Yüzkan S, Mutlu S, Karagülle M, Şam Özdemir M, Özgül H, Arıkan MA, Koçak B. Reproducibility of rCBV in glioblastomas using T2*-weighted perfusion MRI: an evaluation of sampling, normalization, and experience. Diagn Interv Radiol 2024; 30:124-134. [PMID: 37789677 PMCID: PMC10916530 DOI: 10.4274/dir.2023.232442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/17/2023] [Indexed: 10/05/2023]
Abstract
PURPOSE The reproducibility of relative cerebral blood volume (rCBV) measurements among readers with different levels of experience is a concern. This study aimed to investigate the inter-reader reproducibility of rCBV measurement of glioblastomas using the hotspot method in dynamic susceptibility contrast perfusion magnetic resonance imaging (DSC-MRI) with various strategies. METHODS In this institutional review board-approved single-center study, 30 patients with glioblastoma were retrospectively evaluated with DSC-MRI at a 3.0 Tesla scanner. Three groups of reviewers, including neuroradiologists, general radiologists, and radiology residents, calculated the rCBV based on the number of regions of interest (ROIs) and reference areas. For statistical analysis of feature reproducibility, the intraclass correlation coefficient (ICC) and Bland-Altman plots were used. Analyses were made among individuals, reader groups, reader-group pooling, and a population that contained all of them. RESULTS For individuals, the highest inter-reader reproducibility was observed between neuroradiologists [ICC: 0.527; 95% confidence interval (CI): 0.21-0.74] and between residents (ICC: 0.513; 95% CI: 0.20-0.73). There was poor reproducibility in the analyses of individuals with different levels of experience (ICC range: 0.296-0.335) and in reader-wise and group-wise pooling (ICC range: 0.296-0.335 and 0.397-0.427, respectively). However, an increase in ICC values was observed when five ROIs were used. In an analysis of all strategies, the ICC for the centrum semiovale was significantly higher than that for contralateral white matter (P < 0.001). CONCLUSION The inter-reader reproducibility of rCBV measurement was poor to moderate regardless of whether it was calculated by neuroradiologists, general radiologists, or residents, which may indicate the need for automated methods. Choosing five ROIs and using the centrum semiovale as a reference area may increase reliability for all users.
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Affiliation(s)
- Sabahattin Yüzkan
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
| | - Samet Mutlu
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
| | - Mehmet Karagülle
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
| | - Merve Şam Özdemir
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
| | - Hamit Özgül
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
| | - Mehmet Ali Arıkan
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
| | - Burak Koçak
- University of Health Sciences, Başakşehir Çam and Sakura City Hospital, Clinic of Radiology, İstanbul, Türkiye
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Russegger A, Fischer SM, Debruyne AC, Wiltsche H, Boese AD, Dmitriev RI, Borisov SM. Tunable Self-Referenced Molecular Thermometers via Manipulation of Dual Emission in Platinum(II) Pyridinedipyrrolide Complexes. ACS Appl Mater Interfaces 2024; 16:11930-11943. [PMID: 38390631 PMCID: PMC10921383 DOI: 10.1021/acsami.3c19226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/02/2024] [Accepted: 02/11/2024] [Indexed: 02/24/2024]
Abstract
Optical temperature sensors based on self-referenced readout schemes such as the emission ratio and the decay time are crucial for a wide range of applications, with the former often preferred due to simplicity of instrumentation. This work describes a new group of dually emitting dyes, platinum(II) pincer complexes, that can be used directly for ratiometric temperature sensing without an additional reference material. They consist of Pt(II) metal center surrounded by a pyridinedipyrrolide ligand (PDP) and a terminal ligand (benzonitrile, pyridine, 1-butylimidazol or carbon monoxide). Upon excitation with blue light, these complexes exhibit green to orange emission, with quantum yields in anoxic toluene at 25 °C ranging from 13% to 86% and decay times spanning from 8.5 to 97 μs. The emission is attributed to simultaneous thermally activated delayed fluorescence (TADF) and phosphorescence processes on the basis of photophysical investigations and DFT calculations. Rather uniquely, simple manipulations in substituents of the PDP ligand and alteration of the terminal ligand allow fine-tuning of the ratio between TADF and phosphorescence from almost 100% TADF emission (Pt(MesPDPC6F5(BN)) to over 80% of phosphorescence (Pt(PhPDPPh(BuIm)). Apart from ratiometric capabilities, the complexes also are useful as decay time-based temperature indicators with temperature coefficients exceeding 1.5% K-1 in most cases. Immobilization of the dyes into oxygen-impermeable polyacrylonitrile produces temperature sensing materials that can be read out with an ordinary RGB camera or a smartphone. In addition, Pt(PhPDPPh)Py can be incorporated into biocompatible RL100 nanoparticles suitable for cellular nanothermometry, as we demonstrate with temperature measurements in multicellular colon cancer spheroids.
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Affiliation(s)
- Andreas Russegger
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, Graz 8010, Austria
| | - Susanne M. Fischer
- Physical
and Theoretical Chemistry, Institute of Chemistry, University of Graz, Heinrichstrasse 28/IV, Graz 8010, Austria
| | - Angela C. Debruyne
- Tissue
Engineering and Biomaterials Group, Department of Human Structure
and Repair, Faculty of Medical and Health Sciences, Ghent University, C.
Heymanslaan 10, Ghent 9000, Belgium
| | - Helmar Wiltsche
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, Graz 8010, Austria
| | - A. Daniel Boese
- Physical
and Theoretical Chemistry, Institute of Chemistry, University of Graz, Heinrichstrasse 28/IV, Graz 8010, Austria
| | - Ruslan I. Dmitriev
- Tissue
Engineering and Biomaterials Group, Department of Human Structure
and Repair, Faculty of Medical and Health Sciences, Ghent University, C.
Heymanslaan 10, Ghent 9000, Belgium
- Ghent
Light Microscopy Core, Ghent University, Ghent 9000, Belgium
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, Graz 8010, Austria
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Beneki E, Dimitriadis K, Dimitroglou Y, Tsioufis K, Aggeli C. Multimodality Imaging in a Patient With Double Aortic Arch Undergoing Transcatheter Aortic Valve Implantation. JACC Case Rep 2024; 29:102224. [PMID: 38464803 PMCID: PMC10920124 DOI: 10.1016/j.jaccas.2024.102224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/28/2023] [Accepted: 01/04/2024] [Indexed: 03/12/2024]
Abstract
Double aortic arch is a rare congenital malformation often identified as an incidental finding during routine imaging. In our case, we describe aortic hemodynamics of double aortic arch in a patient with severe aortic stenosis and the procedural process of transcatheter aortic valve implantation.
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Affiliation(s)
- Eirini Beneki
- First Cardiology Department, School of Medicine, Hippokration General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Kyriakos Dimitriadis
- First Cardiology Department, School of Medicine, Hippokration General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Yannis Dimitroglou
- First Cardiology Department, School of Medicine, Hippokration General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Tsioufis
- First Cardiology Department, School of Medicine, Hippokration General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Constantina Aggeli
- First Cardiology Department, School of Medicine, Hippokration General Hospital, National and Kapodistrian University of Athens, Athens, Greece
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Wang X, Gondal M, Alabed S, Hill C, Barmby D. Left Main Stem Compression by Intrapericardial Paraganglioma Associated With Succinate Dehydrogenase Mutation. JACC Case Rep 2024; 29:102232. [PMID: 38464804 PMCID: PMC10920150 DOI: 10.1016/j.jaccas.2024.102232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 03/12/2024]
Abstract
Paragangliomas are rare extra-adrenal tumors originating from chromaffin cells. We discovered a large intrapericardial mass confirmed to be a primary cardiac paraganglioma encasing the left main stem coronary artery in a 38-year-old woman who presented with dyspnea and subscapular pain. Genetic predisposition related to succinate dehydrogenase A mutation was identified.
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Affiliation(s)
- Xue Wang
- Division of Clinical Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Mohsin Gondal
- Department of Cardiology, Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, United Kingdom
| | - Samer Alabed
- Department of Radiology, Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, United Kingdom
| | - Catherine Hill
- Department of Radiology, Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, United Kingdom
| | - David Barmby
- Department of Cardiology, Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, United Kingdom
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Tian M, Wu R, Xiang C, Niu G, Guan W. Recent Advances in Fluorescent Probes for Cancer Biomarker Detection. Molecules 2024; 29:1168. [PMID: 38474680 DOI: 10.3390/molecules29051168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
Many important biological species have been identified as cancer biomarkers and are gradually becoming reliable targets for early diagnosis and late therapeutic evaluation of cancer. However, accurate quantitative detection of cancer biomarkers remains challenging due to the complexity of biological systems and the diversity of cancer development. Fluorescent probes have been extensively utilized for identifying biological substances due to their notable benefits of being non-invasive, quickly responsive, highly sensitive and selective, allowing real-time visualization, and easily modifiable. This review critiques fluorescent probes used for detecting and imaging cancer biomarkers over the last five years. Focuses are made on the design strategies of small-molecule and nano-sized fluorescent probes, the construction methods of fluorescence sensing and imaging platforms, and their further applications in detection of multiple biomarkers, including enzymes, reactive oxygen species, reactive sulfur species, and microenvironments. This review aims to guide the design and development of excellent cancer diagnostic fluorescent probes, and promote the broad application of fluorescence analysis in early cancer diagnosis.
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Affiliation(s)
- Mingce Tian
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Institute of Smart Energy, Beijing 102209, China
| | - Riliga Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Caihong Xiang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Guangle Niu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Koller AJ, Glaser O, DeLuca MC, Motz RN, Amason EK, Carbo-Bague I, Mixdorf JC, Guzei IA, Aluicio-Sarduy E, Śmiłowicz D, Barnhart TE, Ramogida CF, Nolan EM, Engle JW, Boros E. "Off-Label Use" of the Siderophore Enterobactin Enables Targeted Imaging of Cancer with Radioactive Ti (IV). Angew Chem Int Ed Engl 2024:e202319578. [PMID: 38442302 DOI: 10.1002/anie.202319578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 03/07/2024]
Abstract
The development of inert, biocompatible chelation methods is required to harness the emerging positron emitting radionuclide 45Ti for radiopharmaceutical applications. Herein, we evaluate the Ti(IV)-coordination chemistry of four catechol-based, hexacoordinate chelators using synthetic, structural, computational, and radiochemical approaches. The siderophore enterobactin (Ent) and its synthetic mimic TREN-CAM readily form mononuclear Ti(IV) species in aqueous solution at neutral pH. Radiolabeling studies reveal that Ent and TREN-CAM form mononuclear complexes with the short-lived, positron-emitting radionuclide 45Ti(IV), and do not transchelate to plasma proteins in vitro and exhibit rapid renal clearance in naïve mice. These features guide efforts to target the 45Ti isotope to prostate cancer tissue through the design, synthesis, and evaluation of Ent-DUPA, a small molecule conjugate composed of a prostate specific membrane antigen (PSMA) targeting peptide and a monofunctionalized Ent scaffold. The [45Ti][Ti(Ent-DUPA)]2- complex forms readily at room temperature. In a tumor xenograft model in mice, selective tumor tissue accumulation (8±5 %, n=5), and low off-target uptake in other organs is observed. Overall, this work demonstrates targeted imaging with 45Ti(IV), provides a foundation for advancing the application of 45Ti in nuclear medicine, and reveals that Ent can be repurposed as a 45Ti-complexing cargo for targeted nuclear imaging applications.
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Affiliation(s)
- Angus J Koller
- Department of Chemistry, Stony Brook University, Stony Brook, New York, 11794, United States
| | - Owen Glaser
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin, 53706, United States
| | - Molly C DeLuca
- Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, Madison, Wisconsin, 53705, United States
| | - Rachel N Motz
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
| | - Edith K Amason
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin, 53706, United States
| | - Imma Carbo-Bague
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Jason C Mixdorf
- Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, Madison, Wisconsin, 53705, United States
| | - Ilia A Guzei
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin, 53706, United States
| | - Eduardo Aluicio-Sarduy
- Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, Madison, Wisconsin, 53705, United States
| | - Dariusz Śmiłowicz
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin, 53706, United States
| | - Todd E Barnhart
- Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, Madison, Wisconsin, 53705, United States
| | - Caterina F Ramogida
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Elizabeth M Nolan
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
| | - Jonathan W Engle
- Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, Madison, Wisconsin, 53705, United States
| | - Eszter Boros
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin, 53706, United States
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Li S, Chen C, Lof J, Stolze EA, Sklenar J, Chen X, Pacella JJ, Villanueva FS, Matsunaga TO, Everbach EC, Radio SJ, Westphal SN, Shiva S, Xie F, Leng X, Porter TR. Acoustic Activation Imaging With Intravenous Perfluoropropane Nanodroplets Results in Selective Bioactivation of the Risk Area. J Ultrasound Med 2024. [PMID: 38440926 DOI: 10.1002/jum.16435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/09/2024] [Accepted: 02/10/2024] [Indexed: 03/06/2024]
Abstract
BACKGROUND Acoustically activatable perfluoropropane droplets (PD) can be formulated from commercially available microbubble preparations. Diagnostic transthoracic ultrasound frequencies have resulted in acoustic activation (AA) predominately within myocardial infarct zones (IZ). OBJECTIVE We hypothesized that the AA area following acute coronary ischemia/reperfusion (I/R) would selectively enhance the developing scar zone, and target bioeffects specifically to this region. METHODS We administered intravenous PD in 36 rats and 20 pigs at various stages of myocardial scar formation (30 minutes, 1 day, and 7 days post I/R) to determine what effect infarct age had on the AA within the IZ. This was correlated with histology, myeloperoxidase activity, and tissue nitrite activity. RESULTS The degree of AA within the IZ in rats was not associated with collagen content, neutrophil infiltration, or infarct age. AA within 24 hours of I/R was associated with increased nitric oxide utilization selectively within the IZ (P < .05 compared with remote zone). The spatial extent of AA in pigs correlated with infarct size only when performed before sacrifice at 7 days (r = .74, P < .01). CONCLUSIONS Acoustic activation of intravenous PD enhances the developing scar zone following I/R, and results in selective tissue nitric oxide utilization.
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Affiliation(s)
- Shouqiang Li
- Department of Ultrasound, Second Affiliated Hospital of Harbin Medical University, Harbin, China
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Cheng Chen
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - John Lof
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Elizabeth A Stolze
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | | | - Xucai Chen
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - John J Pacella
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Flordeliza S Villanueva
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Terry O Matsunaga
- Department of Biomedical Engineering, University of Arizona, Tucson, Arizona, USA
| | - E Carr Everbach
- Department of Engineering, Swarthmore College, Swarthmore, Pennsylvania, USA
| | - Stanley J Radio
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Sherry N Westphal
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Sruti Shiva
- Department of Pharmacology and Chemical Biology, Molecular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Feng Xie
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Xiaoping Leng
- Department of Ultrasound, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Thomas R Porter
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
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Adouni M, Cherni Y, Esrafilian A, Samaan MA. Editorial: Multi-modal approaches to assess the impact of orthopaedic disease on lower extremity joint function and health. Front Sports Act Living 2024; 6:1389519. [PMID: 38504688 PMCID: PMC10948429 DOI: 10.3389/fspor.2024.1389519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/21/2024] Open
Affiliation(s)
- Malek Adouni
- Biomedical and Instrumentation Engineering, Abdullah Al Salem University, Khalidiya, Kuwait
| | - Yosra Cherni
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Universite de Montreal, Montreal, QC, Canada
| | - Amir Esrafilian
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | - Michael A. Samaan
- Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, United States
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Sakagami K, Igawa T, Saikawa K, Sakaguchi Y, Hossain N, Kato C, Kinemori K, Suzuki N, Suzuki M, Kawaguchi A, Ochi H, Tajika Y, Ogino H. Development of a heat-stable alkaline phosphatase reporter system for cis-regulatory analysis and its application to 3D digital imaging of Xenopus embryonic tissues. Dev Growth Differ 2024. [PMID: 38439617 DOI: 10.1111/dgd.12919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/06/2024]
Abstract
Xenopus is one of the essential model systems for studying vertebrate development. However, one drawback of this system is that, because of the opacity of Xenopus embryos, 3D imaging analysis is limited to surface structures, explant cultures, and post-embryonic tadpoles. To develop a technique for 3D tissue/organ imaging in whole Xenopus embryos, we identified optimal conditions for using placental alkaline phosphatase (PLAP) as a transgenic reporter and applied it to the correlative light microscopy and block-face imaging (CoMBI) method for visualization of PLAP-expressing tissues/organs. In embryos whose endogenous alkaline phosphatase activities were heat-inactivated, PLAP staining visualized various tissue-specific enhancer/promoter activities in a manner consistent with green fluorescent protein (GFP) fluorescence. Furthermore, PLAP staining appeared to be more sensitive than GFP fluorescence as a reporter, and the resulting expression patterns were not mosaic, in striking contrast to the mosaic staining pattern of β-galactosidase expressed from the lacZ gene that was introduced by the same transgenesis method. Owing to efficient penetration of alkaline phosphatase substrates, PLAP activity was detected in deep tissues, such as the developing brain, spinal cord, heart, and somites, by whole-mount staining. The stained embryos were analyzed by the CoMBI method, resulting in the digital reconstruction of 3D images of the PLAP-expressing tissues. These results demonstrate the efficacy of the PLAP reporter system for detecting enhancer/promoter activities driving deep tissue expression and its combination with the CoMBI method as a powerful approach for 3D digital imaging analysis of specific tissue/organ structures in Xenopus embryos.
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Affiliation(s)
- Kiyo Sakagami
- Department of Animal Bioscience, Nagahama Institute of Bio-Science and Technology, Nagahama, Japan
| | - Takeshi Igawa
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Kaori Saikawa
- Department of Animal Bioscience, Nagahama Institute of Bio-Science and Technology, Nagahama, Japan
| | - Yusuke Sakaguchi
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Nusrat Hossain
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Chiho Kato
- Department of Animal Bioscience, Nagahama Institute of Bio-Science and Technology, Nagahama, Japan
| | - Kazuhito Kinemori
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Nanoka Suzuki
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Makoto Suzuki
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
| | - Akane Kawaguchi
- Department of Genomics and Evolutionary Biology, National Institute of Genetics, Shizuoka, Japan
| | - Haruki Ochi
- Institute for Promotion of Medical Science Research, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yuki Tajika
- Department of Radiological Technology, Gunma Prefectural College of Health Sciences, Maebashi, Japan
| | - Hajime Ogino
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
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Dalbeth N, Botson J, Saag K, Kumar A, Padnick-Silver L, LaMoreaux B, Becce F. Examination of monosodium urate crystal depletion and bone erosion remodeling during pegloticase treatment in patients with uncontrolled gout: exploratory dual-energy computed tomography findings from MIRROR RCT. Joint Bone Spine 2024:105715. [PMID: 38447697 DOI: 10.1016/j.jbspin.2024.105715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/19/2024] [Accepted: 02/21/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVE Monosodium-urate (MSU) crystal deposits can be visualized and quantified with dual-energy CT (DECT). Pegloticase lowers serum urate (SU) in uncontrolled gout patients, with methotrexate (MTX) co-therapy recommended to increase SU-lowering response rate and decrease infusion reaction risk. The literature on serial DECT-imaging during pegloticase+MTX co-therapy is sparse, with only 2 prior cases of rapid MSU deposition depletion with subsequent bone-erosion remodeling reported from a small open-label trial. Here, we report DECT findings during pegloticase treatment in a larger number of patients from a randomized controlled trial to confirm bone-erosion remodeling that follows MSU depletion with pegloticase. The influence of length-of-therapy is also explored. METHODS Patients received pegloticase (8mg every 2-weeks)+MTX (15mg/week orally) or pegloticase+placebo (PBO) during the MIRROR RCT trial. A subset underwent DECT-imaging on Day1 (first pegloticase infusion) and at Week 14, 24, and 52. Patients with paired baseline-Week52 images were included. Imaged regions with baseline MSU-crystal volume (VMSU) <0.5cm3 were excluded to minimize artifact contributions. VMSU and bone erosion remodeling were assessed. RESULTS Eight patients (6 MTX, 2 PBO) were included. Included patients had received 52-weeks (5 MTX), 42-weeks (1 PBO), and 6-weeks (1 MTX, 1 PBO) of pegloticase therapy. Patients who prematurely discontinued pegloticase maintained SU <6mg/dL on allopurinol (n=2)/febuxostat (n=1). At Week52, VMSU had markedly decreased in both the pegloticase+MTX and pegloticase+PBO treatment groups, with faster depletion during pegloticase therapy. Bone-erosion remodeling was observed in 29/42 (69%) evaluated erosions: 29 (69%) size decrease, 4 (9.5%) recortication, 3 (7.1%) new bone formation. CONCLUSION Rapid VMSU depletion pegloticase therapy was observed with concomitant bone remodeling within 1-year. Following pegloticase discontinuation, VMSU reduction slowed or stopped even when SU was maintained <6mg/dL with oral ULT. CLINICAL TRIAL REGISTRATION NCT03994731.
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Affiliation(s)
- Nicola Dalbeth
- Department of Medicine, University of Auckland, M&HS Building 507, 28 Park Ave. Grafton, Auckland, 1023 New Zealand
| | - John Botson
- Orthopedic Physicians Alaska, 3801 Lake Otis Parkway, Anchorage, AK 99508, United States
| | - Kenneth Saag
- University of Alabama at Birmingham, 2000 6(th) Ave. South, Floor 3, Birmingham, AL 35233, United States
| | - Ada Kumar
- Horizon Therapeutics plc (now Amgen Inc.), 1 Horizon Way, Deerfield, IL 60015, United States
| | - Lissa Padnick-Silver
- Horizon Therapeutics plc (now Amgen Inc.), 1 Horizon Way, Deerfield, IL 60015, United States.
| | - Brian LaMoreaux
- Horizon Therapeutics plc (now Amgen Inc.), 1 Horizon Way, Deerfield, IL 60015, United States
| | - Fabio Becce
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital, University of Lausanne, Rue du Bugnon 46, 1011 Lausanne, Switzerland
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Caus T, Meuris B, Avierinos JF. Editorial: Long-term durability of biological aortic valves. Front Cardiovasc Med 2024; 11:1381366. [PMID: 38500757 PMCID: PMC10945004 DOI: 10.3389/fcvm.2024.1381366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 02/19/2024] [Indexed: 03/20/2024] Open
Affiliation(s)
- Thierry Caus
- Department of Cardiac Surgery, University Hospital Amiens-Picardy, Amiens, France
| | - Bart Meuris
- Department of Cardiac Surgery, Universitair Ziekenhuis, Leuven, Belgium
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Yu S, Yuan B. Improving the spatial resolution and signal-to-noise ratio of ultrasound switchable fluorescence imaging. J Biophotonics 2024:e202300533. [PMID: 38430212 DOI: 10.1002/jbio.202300533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 03/03/2024]
Abstract
Ultrasound switchable fluorescence (USF) imaging, a hybrid imaging technology that combines the advantages of both fluorescence sensitivity and acoustic resolution in centimeter-deep tissue, has great potential for biomedical different applications. A camera-based USF imaging system reveals its capability of capturing both spatial and temporal dynamics of the USF signal in tissue. In this study, various algorithms were explored to enhance the spatial resolution and signal-to-noise ratio (SNR) of USF images, utilizing temporal and spatial information from a camera-based time-domain USF imaging system. The correlation method proved effective in boosting SNR, while the ascending-slope-weighted method enhanced spatial resolution. Additionally, the spatially back-projection method significantly improved spatial resolution in silicone phantoms. The results underscore the advantages of incorporating temporal and spatial information from USF signals.
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Affiliation(s)
- Shuai Yu
- Ultrasound and Optical Imaging Laboratory, Department of Bioengineering, The University of Texas at Arlington, Arlington, Texas, USA
- Joint Biomedical Engineering Program, The University of Texas at Arlington and The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Baohong Yuan
- Ultrasound and Optical Imaging Laboratory, Department of Bioengineering, The University of Texas at Arlington, Arlington, Texas, USA
- Joint Biomedical Engineering Program, The University of Texas at Arlington and The University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Al Musaimi O. Peptide Therapeutics: Unveiling the Potential against Cancer-A Journey through 1989. Cancers (Basel) 2024; 16:1032. [PMID: 38473389 DOI: 10.3390/cancers16051032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 02/25/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
The United States Food and Drug Administration (FDA) has approved a plethora of peptide-based drugs as effective drugs in cancer therapy. Peptides possess high specificity, permeability, target engagement, and a tolerable safety profile. They exhibit selective binding with cell surface receptors and proteins, functioning as agonists or antagonists. They also serve as imaging agents for diagnostic applications or can serve a dual-purpose as both diagnostic and therapeutic (theragnostic) agents. Therefore, they have been exploited in various forms, including linkers, peptide conjugates, and payloads. In this review, the FDA-approved prostate-specific membrane antigen (PSMA) peptide antagonists, peptide receptor radionuclide therapy (PRRT), somatostatin analogs, antibody-drug conjugates (ADCs), gonadotropin-releasing hormone (GnRH) analogs, and other peptide-based anticancer drugs are analyzed in terms of their chemical structures and properties, therapeutic targets and mechanisms of action, development journey, administration routes, and side effects.
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Affiliation(s)
- Othman Al Musaimi
- School of Pharmacy, Faculty of Medical Sciences, Newcastle upon Tyne NE1 7RU, UK
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
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